Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck

CVE-2026-114098Dulwich 0.22.5 before 1.2.8 Path Traversal via Stash Pop Symlinks

High 7.8

In plain English

A high-severity path traversal in dulwich from jelmer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 95.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Dulwich from 0.22.5 before 1.2.8 contains a path traversal vulnerability in stash.py pop() that allows attackers to write arbitrary files outside the worktree through intermediate directory symlinks. Attackers can craft a malicious repository whose popped stash writes a payload into .git/hooks/post-checkout, achieving code execution on the next checkout.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	dulwich	no fix listed	DEBIAN-CVE-2026-114098
Debian:13	dulwich	no fix listed	DEBIAN-CVE-2026-114098
Debian:14	dulwich	1.2.8-1	DEBIAN-CVE-2026-114098
PyPI	dulwich	1.2.8	GHSA-cm62-gvxx-vmxx
Ubuntu:22.04:LTS	dulwich	no fix listed	UBUNTU-CVE-2026-114098
Ubuntu:24.04:LTS	dulwich	no fix listed	UBUNTU-CVE-2026-114098
Ubuntu:26.04:LTS	dulwich	no fix listed	UBUNTU-CVE-2026-114098

Affected products (as reported)

Vendor	Product	Versions
jelmer	dulwich	0.22.5 – before 1.2.8

Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-cm62-gvxx-vmxx) vendor-advisory
VulnCheck Advisory: Dulwich 0.22.5 before 1.2.8 Path Traversal via Stash Pop Symlinks third-party-advisory