🛡️ CVE-2023-22742
🟡 CVSS 5.3 — Medium ✅ No Known Exploit NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.

Details

Severity Medium
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2023-01-20
Updated 2026-06-15
Modified 2023-11-08

Affected Packages

Software From version Fixed in
git2
libgit2
libgit2-sys

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