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.
Metrics
Affected Vendors & Products
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History
Wed, 28 Oct 2026 14:30:00 +0000
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ssvc
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Thu, 22 Oct 2026 12:30:00 +0000
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threat_severity
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threat_severity
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Wed, 21 Oct 2026 00:45:00 +0000
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| Description | 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. | |
| Title | Dulwich 0.24.0 before 1.2.8 Symlink Write-Through via porcelain.checkout paths | |
| First Time appeared |
Dulwich Project
Dulwich Project dulwich |
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| Weaknesses | CWE-59 | |
| CPEs | cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Dulwich Project
Dulwich Project dulwich |
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-21T00:36:59.763Z
Updated: 2026-10-28T13:46:53.993Z
Reserved: 2026-10-20T21:46:55.741Z
Link: CVE-2026-114096
Updated: 2026-10-28T13:46:47.819Z
Status : Deferred
Published: 2026-10-21T01:17:34.933
Modified: 2026-10-28T14:16:57.093
Link: CVE-2026-114096