CVE-2026-114096: high-severity vulnerability in jelmer dulwich
Dulwich 0.24.0 before 1.2.8 Symlink Write-Through via porcelain.checkout paths
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.3epss 0.2%
Dulwich from 0.24.0 before 1.2.8 contains a symlink following vulnerability in porcelain.checkout(paths=[...]) that allows attackers to write arbitrary files by abusing raw os.open without O_NOFOLLOW. Attackers can craft a repository where a worktree symlink points to .git/hooks/post-checkout, so restoring the file from a tag writes a malicious hook for code execution.
CVSS:4.0/AV:L/AC:L/AT:P/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-2026-114094HIGHDulwich before 1.2.9 Arbitrary File Write via DOS drive letter pathsEPSS 0.9%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%