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.
History

Thu, 22 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-59
References
Metrics threat_severity

None

threat_severity

Important


Wed, 21 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
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.
Title Dulwich 0.23.1 before 1.2.8 Symlink Path Traversal via filter_branch Index Filter
First Time appeared Dulwich Project
Dulwich Project dulwich
Weaknesses CWE-22
CPEs cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:*
Vendors & Products Dulwich Project
Dulwich Project dulwich
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-21T00:37:00.461Z

Updated: 2026-10-22T15:51:35.497Z

Reserved: 2026-10-20T21:46:55.741Z

Link: CVE-2026-114097

cve-icon Vulnrichment

Updated: 2026-10-22T15:51:31.194Z

cve-icon NVD

Status : Deferred

Published: 2026-10-21T01:17:35.100

Modified: 2026-10-22T16:17:34.150

Link: CVE-2026-114097

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-21T00:37:00Z

Links: CVE-2026-114097 - Bugzilla