# CVE-2026-5917: libgit2: 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 s... CVE-2026-5917 is fixed in 13 products on 1 platform, first by libgit2-1.1 1.1.0+dfsg.1-4.1ubuntu0.1+esm2, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-5917 - Priority: High - CVSS: 8.8 (high) - EPSS: 0.0143 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 11, 2026 ## 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 recursive clone, causes the remote server's shell to interpret injected commands under the victim's SSH user account. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | cargo-c amzn 2023 | 0.10.21-1.amzn2023.0.2 | [ALAS2023-2026-2113](https://patchblox.com/security/data/fix/linux/alas2023-2026-2113.md) | Aug 31, 2026 | | Linux | cargo-c-debuginfo amzn 2023 | 0.10.21-1.amzn2023.0.2 | [ALAS2023-2026-2113](https://patchblox.com/security/data/fix/linux/alas2023-2026-2113.md) | Aug 31, 2026 | | Linux | libgit2 Debian 12.15 (bookworm) | 1.5.1+ds-1+deb12u2 | [DEBIAN-CVE-2026-5917](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5917.md) | Aug 20, 2026 | | Linux | libgit2 Debian 13.5 (trixie) | 1.9.0+ds-2+deb13u1 | [DEBIAN-CVE-2026-5917](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5917.md) | Aug 20, 2026 | | Linux | libgit2 Debian 14 | 1.9.7+ds-1 | [DEBIAN-CVE-2026-5917](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5917.md) | Aug 20, 2026 | | Linux | libgit2 amzn 2023 | 1.6.4-116.amzn2023 | [ALAS2023-2026-2083](https://patchblox.com/security/data/fix/linux/alas2023-2026-2083.md) | Aug 31, 2026 | | Linux | libgit2-1.1 Ubuntu 22.04.1 LTS (jammy) | 1.1.0+dfsg.1-4.1ubuntu0.1+esm2 | [libgit2-1.1 1.1.0+dfsg.1-4.1ubuntu0.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgit2-1.1-1.1.0-dfsg.1-4.1ubuntu0.1-esm2.md) | Aug 11, 2026 | | Linux | libgit2-1.7 Ubuntu 24.04.5 LTS (noble) | 1.7.2+ds-1ubuntu3.2 | [libgit2-1.7 1.7.2+ds-1ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgit2-1.7-1.7.2-ds-1ubuntu3.2.md) | Aug 11, 2026 | | Linux | libgit2-1.9 Ubuntu 26.04.1 LTS (resolute) | 1.9.1+ds-1ubuntu1.2 | [libgit2-1.9 1.9.1+ds-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgit2-1.9-1.9.1-ds-1ubuntu1.2.md) | Aug 11, 2026 | | Linux | libgit2-26 Ubuntu 18.04.6 LTS (bionic) | 0.26.0+dfsg.1-1.1ubuntu0.2+esm3 | [libgit2-26 0.26.0+dfsg.1-1.1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgit2-26-0.26.0-dfsg.1-1.1ubuntu0.2-esm3.md) | Aug 11, 2026 | | Linux | libgit2-28 Ubuntu 20.04 LTS (focal) | 0.28.4+dfsg.1-2ubuntu0.1+esm2 | [libgit2-28 0.28.4+dfsg.1-2ubuntu0.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgit2-28-0.28.4-dfsg.1-2ubuntu0.1-esm2.md) | Aug 11, 2026 | | Linux | libgit2-debuginfo amzn 2023 | 1.6.4-116.amzn2023 | [ALAS2023-2026-2083](https://patchblox.com/security/data/fix/linux/alas2023-2026-2083.md) | Aug 31, 2026 | | Linux | libgit2-debugsource amzn 2023 | 1.6.4-116.amzn2023 | [ALAS2023-2026-2083](https://patchblox.com/security/data/fix/linux/alas2023-2026-2083.md) | Aug 31, 2026 | | Linux | libgit2-devel amzn 2023 | 1.6.4-116.amzn2023 | [ALAS2023-2026-2083](https://patchblox.com/security/data/fix/linux/alas2023-2026-2083.md) | Aug 31, 2026 | | Linux | libgit2-fixtures Ubuntu 22.04.1 LTS (jammy) | 1.1.0+dfsg.1-4.1ubuntu0.1+esm2 | [libgit2-fixtures 1.1.0+dfsg.1-4.1ubuntu0.1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgit2-fixtures-1.1.0-dfsg.1-4.1ubuntu0.1-esm2.md) | Aug 11, 2026 | | Linux | libgit2-fixtures Ubuntu 24.04.5 LTS (noble) | 1.7.2+ds-1ubuntu3.2 | [libgit2-fixtures 1.7.2+ds-1ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgit2-fixtures-1.7.2-ds-1ubuntu3.2.md) | Aug 11, 2026 | | Linux | libgit2-fixtures Ubuntu 26.04.1 LTS (resolute) | 1.9.1+ds-1ubuntu1.2 | [libgit2-fixtures 1.9.1+ds-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgit2-fixtures-1.9.1-ds-1ubuntu1.2.md) | Aug 11, 2026 | | Linux | rust-cargo-c-debugsource amzn 2023 | 0.10.21-1.amzn2023.0.2 | [ALAS2023-2026-2113](https://patchblox.com/security/data/fix/linux/alas2023-2026-2113.md) | Aug 31, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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