EUVD-2026-117194

Dulwich before 1.2.20 contains a commit object parsing vulnerability where the read path in parsecommit resolves a duplicate tree header to the last occurrence instead of the first, diverging from core git's resolution behavior, while Poetry 2.5.1 ships this version and uses dulwich by default fo...

CVE-2026-122299

The Dulwich library (versions before 1.2.20 ) contains a commit object parsing vulnerability in the _parse_commit read path. The flaw allows the parser to resolve duplicate tree headers to the last occurrence instead of the first, which deviates from standard core git behavior. This inconsistency...

CVE-2026-87819

A flaw was found in GitPython. A remote attacker could exploit a regular expression denial of service ReDoS vulnerability by crafting a malicious commit object. Specifically, a malformed author field containing an unterminated angle bracket can cause excessive processing, leading to the exhaustio...

CVE-2026-44309

Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. Prior to 0.16.0, gitsign verify and gitsign verify-tag re-encode commit/tag objects through go-git's EncodeWithoutSignature before checking the signature, instead of verifying against the raw git...

Libgit2 -- multiple vulnerabilities

The Git community reports: A carefully constructed commit object with a very large number of parents may lead to potential out-of-bounds writes or potential denial of service. The ProgramData configuration file is always read for compatibility with Git for Windows and Portable Git installations...