{"kind": "product", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "name": "libgit2", "product": "libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS", "items": [{"id": "CVE-2026-53586", "noindex": false, "published": "2026-08-20T18:40:08.673Z", "modified": "2026-08-21T21:46:05.425Z", "cvss": 6.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "severity": "medium", "epss": 0.00276, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-53586", "title": "libgit2: HTTP transport can leak credentials to an offsite redirect target", "description": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, the built-in HTTP transport in src/libgit2/transports/http.c follows an offsite initial redirect, and handle_remote_auth and handle_auth pass transport->owner->url instead of transport->server.url to the credential callback when the redirected host returns 401 Unauthorized. A callback that scopes credentials to the original trusted URL can therefore return GIT_CREDENTIAL_USERPASS_PLAINTEXT credentials that libgit2 stores in transport->server.cred an", "references": ["https://github.com/libgit2/libgit2/security/advisories/GHSA-2889-x8f6-mc4x", "https://github.com/libgit2/libgit2/commit/07de6a7e438f95ac9a6efd3222a82117e871ed27", "https://github.com/libgit2/libgit2/commit/af2b29ad0a74d5bac9751376879ddaf848136d3b"], "fixes": ["0.28.4+dfsg.1-2ubuntu0.1+esm1"], "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS"}]}, {"id": "CVE-2026-53583", "noindex": false, "published": "2026-08-20T18:39:03.676Z", "modified": "2026-08-20T19:04:42.247Z", "cvss": 6.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "severity": "medium", "epss": 0.00238, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-53583", "title": "libgit2: Inverted IP SubjectAltName Comparison in OpenSSL Backend", "description": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verify_server_cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN_IPADD branch when comparing an IP-literal host with a certificate IP SubjectAltName. OpenSSL builds reject matching IP addresses and accept mismatched IP addresses, allowing a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept libgit2 connections to IP-literal HTTPS URLs. DNS SubjectAltName validation and non-Open", "references": ["https://github.com/libgit2/libgit2/security/advisories/GHSA-h7gc-w2gg-p9xp", "https://github.com/libgit2/libgit2/commit/647dcb432980b84ede4cb5a008bbd1ccb4ead03d", "https://github.com/libgit2/libgit2/commit/c2aa35409ee0e6515df64da49750f13a0a42c47f"], "fixes": [], "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS"}]}, {"id": "CVE-2026-53585", "noindex": false, "published": "2026-08-20T18:37:44.115Z", "modified": "2026-08-25T15:21:43.819Z", "cvss": 5.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "severity": "medium", "epss": 0.00395, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-53585", "title": "libgit2: Unbounded Memory Allocation via Delta Object Result-Size Header", "description": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, git_delta_apply in src/libgit2/delta.c trusts the attacker-controlled res_sz value parsed by hdr_sz from a delta object header and passes that amount to git__malloc before validating delta instructions. Malicious pack data supplied through git_clone, git_fetch, git_remote_fetch, git_indexer_append, or a local attacker-supplied repository can use a very small multi-level OFS_DELTA chain to retain extremely large allocations and exhaust memory. This i", "references": ["https://github.com/libgit2/libgit2/security/advisories/GHSA-27m5-gxxh-x79j", "https://github.com/libgit2/libgit2/commit/0cdfdd5fa8f8514c82413025e1e0808866cf7c30", "https://github.com/libgit2/libgit2/commit/c1896f06df22cc0ca5658df3a8f6cd7ede4cd6ae"], "fixes": ["0.28.4+dfsg.1-2ubuntu0.1+esm1"], "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS"}]}, {"id": "CVE-2026-53584", "noindex": false, "published": "2026-08-20T18:35:10.280Z", "modified": "2026-08-20T19:48:17.848Z", "cvss": 4.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "severity": "medium", "epss": 0.00328, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-53584", "title": "libgit2: Submodule path traversal", "description": "libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 does not reject traversal components in a submodule path loaded from .gitmodules. The affected src/libgit2/submodule.c paths include git_submodule_lookup and git_submodule_add_setup. A crafted repository can specify a path such as ../escape-target, and applications that initialize the submodule can create directories outside the repository working tree. This issue is fixed in versions 1.8.6 and 1.9.5.", "references": ["https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm", "https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1", "https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c"], "fixes": ["0.28.4+dfsg.1-2ubuntu0.1+esm1"], "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS"}]}, {"id": "CVE-2026-5917", "noindex": false, "published": "2026-08-11T21:40:29.078Z", "modified": "2026-10-01T15:20:07.878Z", "cvss": 8.6, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.01427, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-5917", "title": "libgit2 Shell Command Injection via ssh_libssh2 Backend", "description": "libgit2 versions before 1.8.7 and 1.9.0 before 1.9.7 built with the libssh2 SSH backend (USE_SSH=libssh2) contain a shell command injection vulnerability that allows remote attackers to execute arbitrary commands on an SSH server by supplying a repository path containing unescaped shell metacharacters such as single quotes, semicolons, or pipes. The gen_proto() function in ssh_libssh2.c inserts the repository path directly into a shell command string without escaping special characters before passing it to libssh2_channel_exec(), enabling an attacker to craft a malicious submodule URL in a .gitmodules file that, when processed during a recurs", "references": ["https://github.com/libgit2/libgit2/security/advisories/GHSA-xqj4-2j5v-rr75", "https://www.vulncheck.com/advisories/libgit2-shell-command-injection-via-ssh-libssh2-backend", "https://nvd.nist.gov/vuln/detail/CVE-2026-5917"], "fixes": ["0.28.4+dfsg.1-2ubuntu0.1+esm2"], "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04:LTS"}]}], "total": 5, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "libgit2", "path": "vulns/ubuntu-pro-20.04-lts/libgit2", "ecosystem": "Ubuntu:Pro:20.04: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": "2026-10-01T15:20:07.878Z", "early_advisories": [], "license": "You may freely use the PatchFirst selection and our additions (priorities, early warnings, texts, summaries and aggregates) for your own purposes, including internal business use. Resale, commercial distribution and bulk mirroring of this selection or these additions require a written agreement with the operator. Whenever you use or publish the selection or our additions, credit PatchFirst (https://patchfirst.dev/vulns/) with this link to the regional feed page. Original records from open sources remain subject to their respective licenses and terms. These conditions do not restrict your rights to the original data, which you can obtain directly from those sources.", "terms_url": "https://patchfirst.dev/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "Records are selected, normalized and combined by PatchFirst; summaries and translations may be added. News is credited with a link to the original source in each entry.", "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. 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