CVE-2026-114097Dulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index Filter
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 0.23.1 before 1.2.8 contains a path traversal vulnerability in CommitFilter._apply_index_filter() that allows attackers to write files outside the working directory via symlinks persisting between commits. Attackers can craft a repository where an ancestor commit's symlink redirects a descendant commit's file writes during filter_branch, enabling code execution by writing into .git/hooks.
- 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-22
- 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 0.23.1 before 1.2.8; 1.2.8 not affected | CNA record |
References
- https://github.com/jelmer/dulwich/security/advisories/GHSA-5fqc-mrg8-w798vendor-advisory
- https://www.vulncheck.com/advisories/dulwich-0.23.1-before-1.2.8-symlink-path-traversal-via-filter-branch-index-filterthird-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.