CVE-2026-114096
Published:October 21, 2026
Updated:October 21, 2026
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.
Affected Packages
dulwich (CONDA):
Affected version(s) >=1.0.0 <1.2.10Fix Suggestion:
Update to version 1.2.10https://github.com/jelmer/dulwich.git (GITHUB):
Affected version(s) >=dulwich-1.0.0 <dulwich-1.2.8Fix Suggestion:
Update to version dulwich-1.2.8dulwich (PYTHON):
Affected version(s) >=1.0.0 <1.2.8Fix Suggestion:
Update to version 1.2.8Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.3
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')