CVE-2026-114094: high-severity vulnerability in jelmer dulwich
Dulwich before 1.2.9 Arbitrary File Write via DOS drive letter paths
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.9%
Dulwich before 1.2.9 fails to validate DOS drive letter prefixes in Git tree path elements on Windows, allowing arbitrary file write. Attackers can craft a malicious repository with a tree entry named 'C:' that bypasses NTFS validation and writes files outside the worktree to achieve remote code execution.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
jelmer · dulwichRelated CVEs — jelmer dulwich
In the same product, most dangerous first.
CVE-2026-42305HIGHDulwich has an arbitrary file write via NTFS-hostile tree entries on WindowsEPSS 0.6%CVE-2026-42563HIGHDulwich Vulnerable to Command Injection via Merge Driver PathEPSS 0.6%CVE-2026-52726HIGHDulwich's submodule path traversal in porcelain.submodule_update / porcelain.clone(recurse_submodules=True) yields RCE via attacker-dropped .git/hooks payloadEPSS 0.4%CVE-2026-114095HIGHDulwich before 1.2.9 Infinite Loop DoS via Pack.resolve_objectEPSS 0.3%CVE-2026-47734MEDIUMDulwich has unbounded memory allocation in receive-pack from crafted thin packsEPSS 0.2%CVE-2026-114097HIGHDulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index FilterEPSS 0.2%