CVE-2026-114096

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33
https://www.vulncheck.com/advisories/dulwich-0.24.0-before-1.2.8-symlink-write-through-via-porcelain-checkout-paths
https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33

Configurations

No configuration.

History

28 Oct 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33 -~~	() https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33 -

21 Oct 2026, 01:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 01:17

Updated : 2026-10-28 14:16

NVD link : CVE-2026-114096

Mitre link : CVE-2026-114096

CVE.ORG link : CVE-2026-114096

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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