{"id":"CVE-2026-50024","summary":"GitHacker: Path traversal in ref/hash parsing enables existence oracle and hex-fragment exfiltration via a malicious .git server","details":"GitHacker is a tool that restores Git repositories from exposed .git directories. In 1.1.7 and earlier, add_head_file_tasks parses an attacker-controlled ref path from .git/HEAD and joins unvalidated path segments onto temp_dst/.git/logs/, allowing a malicious server to make GitHacker read an arbitrary local file when a victim runs the tool against the server's URL. add_hashes_parsed then scans the file for 40-character hexadecimal substrings and requests each match through .git/objects using the first two characters and remaining characters as path components, creating an attacker-observable existence oracle and disclosing matching hexadecimal fragments. Complete file contents are not returned, and the add_folder and add_task write path in shipped version 1.1.7 does not permit an escape. This issue is fixed in repository version 1.1.9.","aliases":["GHSA-hr3m-4qwq-3mgc","PYSEC-2026-3835"],"modified":"2026-09-18T03:30:20.595969202Z","published":"2026-09-15T15:01:55.365Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50024.json","unresolved_ranges":[{"extracted_events":[{"fixed":"1.1.8"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-23"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50024.json"},{"type":"ADVISORY","url":"https://github.com/WangYihang/GitHacker/security/advisories/GHSA-hr3m-4qwq-3mgc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50024"},{"type":"FIX","url":"https://github.com/WangYihang/GitHacker/commit/16fcd81a9c3dfdf39713fde360d4e8bc3acf99e7"},{"type":"FIX","url":"https://github.com/WangYihang/GitHacker/commit/5f2a8ba4d451c6a1a465893507fbc42535a9d8c8"},{"type":"FIX","url":"https://github.com/WangYihang/GitHacker/pull/65"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wangyihang/githacker","events":[{"introduced":"0"},{"fixed":"16fcd81a9c3dfdf39713fde360d4e8bc3acf99e7"},{"fixed":"5f2a8ba4d451c6a1a465893507fbc42535a9d8c8"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.1.3","v1.1.0","v1.0.11","v1.0.9","v1.0.2","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50024.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}