{"kind": "product", "path": "vulns/ubuntu-26.04-lts/libxml2", "name": "libxml2", "product": "libxml2", "ecosystem": "Ubuntu:26.04:LTS", "items": [{"id": "CVE-2026-76781", "noindex": false, "published": "2026-09-17T15:11:29.256Z", "modified": "2026-09-24T11:57:00.431Z", "cvss": 5.5, "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "severity": "medium", "epss": 0.00167, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-76781", "title": "Libxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute", "description": "A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a `nextCatalog` element lacks its mandatory `catalog` attribute, leading to the application crashing and causing a Denial of Service (DoS).", "references": ["https://access.redhat.com/errata/RHSA-2026:57604", "https://access.redhat.com/security/cve/CVE-2026-76781", "https://bugzilla.redhat.com/show_bug.cgi?id=2519776"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-74860", "noindex": false, "published": "2026-09-08T11:27:45.158Z", "modified": "2026-10-29T19:53:12.151Z", "cvss": 8.5, "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "severity": "high", "epss": 0.00658, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-74860", "title": "Libxml2: double-free/uaf in libxml2 python bindings", "description": "A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.", "references": ["https://access.redhat.com/errata/RHSA-2026:64463", "https://access.redhat.com/errata/RHSA-2026:71585", "https://access.redhat.com/errata/RHSA-2026:71586"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.2"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86144", "noindex": false, "published": "2026-09-05T04:34:43.972Z", "modified": "2026-09-08T13:04:51.845Z", "cvss": 5.6, "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "severity": "medium", "epss": 0.00186, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86144", "title": "CVE-2026-86144", "description": "In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/b63cd517afecb76582dd9488c55e54ceaf50de61", "https://nvd.nist.gov/vuln/detail/CVE-2026-86144"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86143", "noindex": false, "published": "2026-09-05T04:31:21.187Z", "modified": "2026-09-08T18:06:25.507Z", "cvss": 6.9, "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "severity": "medium", "epss": 0.00194, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86143", "title": "CVE-2026-86143", "description": "In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to reach write callbacks, aka a lack of a check for integer overflow before calling writecallback. This has security relevance for many types of uses of that length value within a callback.", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/90f293ba74d28b1d570920382e707586f68ebf35", "https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1111"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86142", "noindex": false, "published": "2026-09-05T04:29:33.323Z", "modified": "2026-09-14T13:50:49.902Z", "cvss": 6.9, "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "severity": "medium", "epss": 0.00157, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86142", "title": "CVE-2026-86142", "description": "In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58", "https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86140", "noindex": false, "published": "2026-09-05T04:26:13.860Z", "modified": "2026-09-08T18:06:15.447Z", "cvss": 8, "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "severity": "high", "epss": 0.00157, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86140", "title": "CVE-2026-86140", "description": "In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340", "https://nvd.nist.gov/vuln/detail/CVE-2026-86140"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.2"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86139", "noindex": false, "published": "2026-09-05T04:23:14.686Z", "modified": "2026-09-08T13:04:24.068Z", "cvss": 6.9, "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "severity": "medium", "epss": 0.00166, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86139", "title": "CVE-2026-86139", "description": "In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/8edbbdb09f24d26a2f900141fddc2b9d014f53b0", "https://nvd.nist.gov/vuln/detail/CVE-2026-86139"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-86138", "noindex": false, "published": "2026-09-05T04:21:53.127Z", "modified": "2026-09-08T18:04:58.145Z", "cvss": 6.9, "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "severity": "medium", "epss": 0.00132, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-86138", "title": "CVE-2026-86138", "description": "In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.", "references": ["https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4", "https://github.com/GNOME/libxml2/commit/a4cba4b5b5a8c42e155ed42d2d2a44955465a2e4", "https://nvd.nist.gov/vuln/detail/CVE-2026-86138"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.3"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-11979", "noindex": false, "published": "2026-06-29T13:21:42.697Z", "modified": "2026-06-29T13:59:18.501Z", "cvss": 1.8, "cvss_vector": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N", "severity": "low", "epss": 0.00148, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-11979", "title": "Stack-Based Buffer Overflow in libxml2", "description": "libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking.\nBy supplying an overly long input line, an attacker can overflow internal buffers (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame.\nSuccessful exploitation may cause a crash or potentially allow arbitrary code execution in the context of the xmlcatalog process.\n\nThis issue has been fixed in the commit c2e233fc.\n\nNOTE:\nThe maintainers of this project did not agree t", "references": ["https://cert.pl/en/posts/2026/06/CVE-2026-11979", "https://gitlab.gnome.org/GNOME/libxml2/-/commit/c2e233fc1b341685fc99621b2768b503f777a72e", "https://nvd.nist.gov/vuln/detail/CVE-2026-11979"], "fixes": [], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}, {"id": "CVE-2026-6732", "noindex": false, "published": "2026-04-23T22:19:34.322Z", "modified": "2026-08-31T11:15:35.301Z", "cvss": 6.5, "cvss_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "medium", "epss": 0.00632, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-6732", "title": "Libxml2: libxml2: denial of service via crafted xsd-validated document", "description": "A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.", "references": ["https://access.redhat.com/errata/RHSA-2026:11503", "https://access.redhat.com/security/cve/CVE-2026-6732", "https://bugzilla.redhat.com/show_bug.cgi?id=2461300"], "fixes": ["2.15.2+dfsg-0.1ubuntu0.1"], "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04:LTS"}]}], "total": 10, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "libxml2", "path": "vulns/ubuntu-26.04-lts/libxml2", "ecosystem": "Ubuntu:26.04: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": "2026-10-29T19:53:12.151Z", "early_advisories": [], "license": "Sie dürfen die Auswahl von PatchFirst und unsere Ergänzungen (Prioritäten, Frühwarnungen, Texte, Zusammenfassungen und Aggregate) für eigene Zwecke einschließlich interner geschäftlicher Aufgaben frei nutzen. Weiterverkauf, kommerzielle Verbreitung und massenhafte Spiegelung dieser Auswahl oder Ergänzungen erfordern eine schriftliche Vereinbarung mit dem Betreiber. Nennen Sie bei jeder Nutzung oder Veröffentlichung der Auswahl oder unserer Ergänzungen PatchFirst (https://patchfirst.dev/vulns/) mit diesem Link zur Feedseite Ihrer Region als Quelle. Originaleinträge aus offenen Quellen unterliegen weiterhin ihren jeweiligen Lizenzen und Bedingungen. Diese Bedingungen beschränken Ihre Rechte an den Originaldaten nicht, die Sie direkt bei den Quellen beziehen können.", "terms_url": "https://patchfirst.dev/de/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "PatchFirst wählt Einträge aus, normalisiert und kombiniert sie; Zusammenfassungen und Übersetzungen können hinzukommen. Nachrichten werden im jeweiligen Eintrag mit einem Link zur Originalquelle belegt.", "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": "Die Lizenzen der Ursprungsdatenbanken unterscheiden sich; siehe Quellenkatalog."}, {"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": "Frei zugängliche Bewertungen; Quellenangabe erbeten (FIRST EPSS, Bewertungen von 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. 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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."}]}