{"kind": "product", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "name": "matrix-synapse", "product": "matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS", "items": [{"id": "CVE-2026-45078", "noindex": false, "published": "2026-05-28T15:52:04.765Z", "modified": "2026-05-29T15:31:44.793Z", "cvss": 6.8, "cvss_vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "medium", "epss": 0.00128, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-45078", "title": "Synapse CPU starvation (Denial of Service)", "description": "Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, local authenticated users can cause Synapse to starve other requests of CPU and lead to other requests failing, causing other users to be denied service. This vulnerability is fixed in 1.152.1.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-8q93-326v-3m7g", "https://nvd.nist.gov/vuln/detail/CVE-2026-45078"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2026-45076", "noindex": false, "published": "2026-05-28T15:50:25.842Z", "modified": "2026-06-02T14:51:34.553Z", "cvss": 5.1, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "severity": "medium", "epss": 0.00369, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-45076", "title": "Synapse pagination denial of service", "description": "Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, in federated rooms, malicious homeservers can craft room events in such a way that prevents Synapse from providing full history to paginating clients. Clients could therefore fail to display room history. This vulnerability is fixed in 1.152.1.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-6qf2-7x63-mm6v", "https://nvd.nist.gov/vuln/detail/CVE-2026-45076"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2025-61672", "noindex": false, "published": "2025-10-08T14:55:06.378Z", "modified": "2025-10-15T16:11:07.284Z", "cvss": 5.3, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N", "severity": "medium", "epss": 0.00476, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-61672", "title": "Synapse: Invalid device keys degrade federation functionality", "description": "Synapse is an open source Matrix homeserver implementation. Lack of validation for device keys in Synapse before 1.138.3 and in Synapse 1.139.0 allow an attacker registered on the victim homeserver to degrade federation functionality, unpredictably breaking outbound federation to other homeservers. The issue is patched in Synapse 1.138.3, 1.138.4, 1.139.1, and 1.139.2. Note that even though 1.138.3 and 1.139.1 fix the vulnerability, they inadvertently introduced an unrelated regression. For this reason, the maintainers of Synapse recommend skipping these releases and upgrading straight to 1.138.4 and 1.139.2.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-fh66-fcv5-jjfr", "https://github.com/element-hq/synapse/pull/17097", "https://github.com/element-hq/synapse/commit/26aaaf9e48fff80cf67a20c691c75d670034b3c1"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2025-30355", "noindex": false, "published": "2025-03-27T00:59:27.996Z", "modified": "2025-03-27T13:47:50.179Z", "cvss": 7.1, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H", "severity": "high", "epss": 0.01226, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-30355", "title": "Synapse vulnerable to federation denial of service via malformed events", "description": "Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-v56r-hwv5-mxg6", "https://github.com/element-hq/synapse/commit/2277df2a1eb685f85040ef98fa21d41aa4cdd389", "https://github.com/element-hq/synapse/releases/tag/v1.127.1"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-37303", "noindex": false, "published": "2024-12-03T17:06:02.467Z", "modified": "2024-12-03T18:51:29.590Z", "cvss": 5.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "severity": "medium", "epss": 0.0043, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-37303", "title": "Synapse unauthenticated writes to the media repository allow planting of problematic content", "description": "Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be fro", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxr", "https://github.com/matrix-org/matrix-spec-proposals/pull/3916", "https://nvd.nist.gov/vuln/detail/CVE-2024-37303"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-37302", "noindex": false, "published": "2024-12-03T17:04:15.839Z", "modified": "2024-12-03T18:56:17.082Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00596, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-37302", "title": "Synapse denial of service through media disk space consumption", "description": "Synapse is an open-source Matrix homeserver. Synapse versions before 1.106 are vulnerable to a disk fill attack, where an unauthenticated adversary can induce Synapse to download and cache large amounts of remote media. The default rate limit strategy is insufficient to mitigate this. This can lead to a denial of service, ranging from further media uploads/downloads failing to completely unavailability of the Synapse process, depending on how Synapse was deployed. Synapse 1.106 introduces a new \"leaky bucket\" rate limit on remote media downloads to reduce the amount of data a user can request at a time. This does not fully address the issue, ", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-4mhg-xv73-xq2x", "https://nvd.nist.gov/vuln/detail/CVE-2024-37302"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-52805", "noindex": false, "published": "2024-12-03T17:01:50.119Z", "modified": "2024-12-03T19:04:44.446Z", "cvss": 8.2, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00739, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-52805", "title": "Synapse allows unsupported content types to lead to memory exhaustion", "description": "Synapse is an open-source Matrix homeserver. In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks. Synapse 1.120.1 resolves the issue by denying requests with unsupported multipart/form-data content type.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2", "https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518", "https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-52815", "noindex": false, "published": "2024-12-03T16:58:30.877Z", "modified": "2024-12-03T19:06:11.082Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.0057, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-52815", "title": "Synapse allows a a malformed invite to break the invitee's `/sync`", "description": "Synapse is an open-source Matrix homeserver. Synapse versions before 1.120.1 fail to properly validate invites received over federation. This vulnerability allows a malicious server to send a specially crafted invite that disrupts the invited user's /sync functionality. Synapse 1.120.1 rejects such invalid invites received over federation and restores the ability to sync for affected users.", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-f3r3-h2mq-hx2h", "https://nvd.nist.gov/vuln/detail/CVE-2024-52815"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-53863", "noindex": false, "published": "2024-12-03T16:48:29.722Z", "modified": "2024-12-03T19:08:30.218Z", "cvss": 8.2, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00606, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-53863", "title": "Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders", "description": "Synapse is an open-source Matrix homeserver. In Synapse versions before 1.120.1, enabling the dynamic_thumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing. This significantly expands the attack surface in a historically vulnerable area, presenting a risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or within the Matrix ecosystem. Synapse 1.120.1 addresses the issue by restricting thumbnail generation to images in the following widely used f", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-vp6v-whfm-rv3g", "https://nvd.nist.gov/vuln/detail/CVE-2024-53863"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}, {"id": "CVE-2024-31208", "noindex": false, "published": "2024-04-23T17:26:39.171Z", "modified": "2025-02-13T17:47:51.943Z", "cvss": 6.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "severity": "medium", "epss": 0.01463, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-31208", "title": "Synapse's V2 state resolution weakness allows DoS from remote room members", "description": "Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge th", "references": ["https://github.com/element-hq/synapse/security/advisories/GHSA-3h7q-rfh9-xm4v", "https://github.com/element-hq/synapse/commit/55b0aa847a61774b6a3acdc4b177a20dc019f01a", "https://github.com/element-hq/synapse/releases/tag/v1.105.1"], "fixes": [], "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}]}], "total": 10, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "matrix-synapse", "path": "vulns/ubuntu-24.04-lts/matrix-synapse", "ecosystem": "Ubuntu:24.04:LTS"}], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}, {"name": "web", "path": "vulns/stack/web", "slug": "web"}, {"name": "php", "path": "vulns/stack/php", "slug": "php"}, {"name": "python", "path": "vulns/stack/python", "slug": "python"}, {"name": "node", "path": "vulns/stack/node", "slug": "node"}, {"name": "database", "path": "vulns/stack/database", "slug": "database"}, {"name": "containers", "path": "vulns/stack/containers", "slug": "containers"}, {"name": "network", "path": "vulns/stack/network", "slug": "network"}, {"name": "applications", "path": "vulns/stack/applications", "slug": "applications"}], "versions": [], "stats": {"recent": 0, "kev": 0}, "lastmod": "2026-06-02T14:51:34.553Z", "early_advisories": [], "license": "Puedes utilizar libremente la selección de PatchFirst y nuestras aportaciones (prioridades, alertas tempranas, textos, resúmenes y agregados) para tus propios fines, incluido el uso interno de tu empresa. La reventa, la distribución comercial y la creación masiva de réplicas de esta selección o de estas aportaciones requieren un acuerdo escrito con el operador. Siempre que uses o publiques la selección o nuestras aportaciones, cita a PatchFirst (https://patchfirst.dev/vulns/) con este enlace a la página del flujo de tu región. Los registros originales de fuentes abiertas siguen sujetos a sus respectivas licencias y condiciones. Estas condiciones no limitan tus derechos sobre los datos originales, que puedes obtener directamente de esas fuentes.", "terms_url": "https://patchfirst.dev/es/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "PatchFirst selecciona, normaliza y combina los registros; se pueden añadir resúmenes y traducciones. Las noticias incluyen un enlace a la fuente original en cada entrada.", "sources": [{"id": "cve", "name": "CVE List / CVE.org", "url": "https://www.cve.org/", "license": "CVE Terms of Use", "terms_url": "https://www.cve.org/Legal/TermsOfUse", "notice": "Copyright © 1999–2021, The MITRE Corporation. LICENSE Submissions : For all materials you submit to the Common Vulnerabilities and Exposures (CVE™), you hereby grant to The MITRE Corporation (MITRE) and all CVE Numbering Authorities (CNAs) a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute such materials and derivative works. Unless required by applicable law or agreed to in writing, you provide such materials on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. CVE Usage : MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. DISCLAIMERS ALL DOCUMENTS AND THE INFORMATION CONTAINED THEREIN PROVIDED BY MITRE ARE PROVIDED ON AN \"AS IS\" BASIS AND THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE MITRE CORPORATION, ITS BOARD OF TRUSTEES, OFFICERS, AGENTS, AND EMPLOYEES, DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."}, {"id": "osv", "name": "OSV", "url": "https://osv.dev/", "terms_url": "https://google.github.io/osv.dev/data/", "terms": "Las licencias de las bases originales varían; consulta el catálogo de fuentes."}, {"id": "kev", "name": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "license": "CC0-1.0", "terms_url": "https://github.com/cisagov/kev-data/blob/develop/LICENSE"}, {"id": "epss", "name": "FIRST EPSS", "url": "https://www.first.org/epss/", "terms_url": "https://www.first.org/epss/faq", "terms": "Puntuaciones públicas gratuitas; se solicita atribución (FIRST EPSS, puntuaciones generadas por Empirical Security)."}, {"id": "github-advisory", "name": "GitHub Advisory Database", "url": "https://github.com/advisories", "license": "CC-BY-4.0", "terms_url": "https://github.com/github/advisory-database/blob/main/LICENSE.md"}, {"id": "exploitdb", "name": "Exploit-DB", "url": "https://www.exploit-db.com/", "license": "GPL-2.0", "terms_url": "https://gitlab.com/exploit-database/exploitdb/-/blob/main/LICENSE.md"}, {"id": "metasploit", "name": "Metasploit", "url": "https://github.com/rapid7/metasploit-framework", "license": "BSD-3-Clause", "terms_url": "https://github.com/rapid7/metasploit-framework/blob/master/LICENSE", "notice": "Copyright (c) 2006-2026, Rapid7, Inc.\nLicense: BSD-3-clause\n Redistribution and use in source and binary forms, with or without modification,\n are permitted provided that the following conditions are met:\n .\n * Redistributions of source code must retain the above copyright notice,\n this list of conditions and the following disclaimer.\n .\n * Redistributions in binary form must reproduce the above copyright notice,\n this list of conditions and the following disclaimer in the documentation\n and/or other materials provided with the distribution.\n .\n * Neither the name of Rapid7, Inc. nor the names of its contributors\n may be used to endorse or promote products derived from this software\n without specific prior written permission.\n .\n THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR\n ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON\n ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\n SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."}, {"id": "nuclei", "name": "Nuclei Templates", "url": "https://github.com/projectdiscovery/nuclei-templates", "license": "MIT", "terms_url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/LICENSE.md", "notice": "MIT License\n\nCopyright (c) 2025 ProjectDiscovery, Inc.\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE."}, {"id": "linux-kernel", "name": "Linux kernel releases", "url": "https://www.kernel.org/", "license": "CC-BY-SA-4.0", "terms_url": "https://www.kernel.org/legal.html", "notice": "Copyright (C) 1997-2014 by The Linux Kernel Organization, Inc."}]}