Dulwich 0.24.0 before 1.2.8 Symlink Write-Through via porcelain.checkout paths
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.
CVE-2026-114096
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-114096
dulwich
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "jelmer",
"product": "dulwich",
"versions": [
{
"status": "affected",
"version": "0.24.0",
"lessThan": "1.2.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "1.2.8",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/dulwich",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-114096
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #44970 · Revision 1
- Added to Heist Feed
- Publisher date