CVE-2026-114096Dulwich 0.24.0 before 1.2.8 Symlink Write-Through via porcelain.checkout paths
Updated under an hour ago ()
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EPSS puts the chance of exploitation in the next 30 days at 0.15%, higher than 4% of scored CVEs.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-59
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.15% (percentile 4)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
Affected products
jelmer dulwich jelmer:dulwich (from the name) | from 0.24.0 before 1.2.8; 1.2.8 not affected | CNA record |
References
- https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33vendor-advisory
- https://www.vulncheck.com/advisories/dulwich-0.24.0-before-1.2.8-symlink-write-through-via-porcelain-checkout-pathsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.