CVE-2026-114097 Details
Description
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.
A path traversal vulnerability has been identified in Dulwich versions 0.23.1 prior to 1.2.8, specifically within the CommitFilter._apply_index_filter() method. This vulnerability allows attackers to write files outside the working directory by exploiting symlinks that persist between commits. By crafting a repository where an ancestor commit's symlink redirects file writes from a descendant commit during the filter_branch process, attackers can execute code by writing into the .git/hooks directory.
Users can upgrade to Dulwich version 1.2.8 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 21, 2026CISA-ADP
Assessed Oct 22, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/jelmer/dulwich/security/advisories/GHSA-5fqc-mrg8-w798 | [email protected] | AdvisoryTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/dulwich-0.23.1-before-1.2.8-symlink-path-traversal-via-filter-branch-index-filter | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Dulwich | >= 0.23.1, <= 1.2.7 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 22, 2026 | CVE Modified | CISA-ADP |
| Oct 21, 2026 | New CVE Received | [email protected] |
Volerion