CVE-2026-114094Dulwich before 1.2.9 Arbitrary File Write via DOS drive letter paths
Updated under an hour ago ()
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It affects jelmer dulwich. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.67%, higher than 51% of scored CVEs.
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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
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.67% (percentile 51)
- 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) | before 1.2.9; 1.2.9 not affected | CNA record |
References
- https://github.com/jelmer/dulwich/security/advisories/GHSA-8mcx-5rqc-vhmfvendor-advisory
- https://www.vulncheck.com/advisories/dulwich-before-1.2.9-arbitrary-file-write-via-dos-drive-letter-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.