{"cve":"CVE-2026-114094","nvd":{"published":"2026-10-21T01:17:34.580","modified":"2026-10-21T01:17:34.713","status":"Deferred","description":"Dulwich before 1.2.9 fails to validate DOS drive letter prefixes in Git tree path elements on Windows, allowing arbitrary file write. Attackers can craft a malicious repository with a tree entry named 'C:' that bypasses NTFS validation and writes files outside the worktree to achieve remote code execution.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-22"],"references":["https://github.com/jelmer/dulwich/security/advisories/GHSA-8mcx-5rqc-vhmf","https://www.vulncheck.com/advisories/dulwich-before-1.2.9-arbitrary-file-write-via-dos-drive-letter-paths"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:58:25.040806189+00:00"},"epss":{"cve":"CVE-2026-114094","score":0.00671,"percentile":0.51739,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-8mcx-5rqc-vhmf","url":"https://osv.dev/vulnerability/GHSA-8mcx-5rqc-vhmf","summary":"Dulwich: Arbitrary File Write (RCE) on Windows via Unvalidated Drive Letters in Tree Paths","modified":"2026-10-21T10:57:27.354775093Z","packages":[{"ecosystem":"PyPI","name":"dulwich","purl":"pkg:pypi/dulwich","ranges":["<1.2.9"],"fixed":["1.2.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}