{"id":"CVE-2026-123012","details":"In Gogs 0.14.3, the Git Smart HTTP authorization layer in internal/route/repo/http.go allows a push when only read access was intended, a different vulnerability than CVE-2026-52810. This occurs because of a case-sensitivity desync between the authorization classifier and the request dispatcher: the gitHTTPIsPull function compares the Git action verb case-sensitively and defaults to pull (read access) for any unrecognized string, whereas the request dispatcher lowercases the same verb before routing it to the receive-pack handler. Capitalizing a single letter in the URL (e.g. info/Refs instead of info/refs, or git-receive-Pack instead of git-receive-pack) causes the classifier to misidentify a push as a pull, granting only read-level authorization, whereas the dispatcher routes it to the write handler. An authenticated read-only collaborator can exploit this to push to a private repository, creating, updating, or deleting refs.","aliases":["CVE-2026-52810","GHSA-wmfg-5p4h-5fw3","GO-2026-5712"],"modified":"2026-11-11T02:33:59.458372680Z","published":"2026-11-05T04:52:36.068Z","database_specific":{"cwe_ids":["CWE-178"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123012.json","cna_assigner":"mitre"},"references":[{"type":"WEB","url":"https://github.com/gogs/gogs/blob/3ba8aca90e17e5410b7e8b227c9f29256ac3e875/internal/route/repo/http.go#L415-L418"},{"type":"WEB","url":"https://github.com/gogs/gogs/blob/3ba8aca90e17e5410b7e8b227c9f29256ac3e875/internal/route/repo/http.go#L64-L68"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123012.json"},{"type":"ADVISORY","url":"https://github.com/gogs/gogs/security/advisories/GHSA-wmfg-5p4h-5fw3"},{"type":"ADVISORY","url":"https://humanoid.sh/blog/gogs-cve-2026-123012/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123012"},{"type":"PACKAGE","url":"https://github.com/gogs/gogs"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gogs/gogs","events":[{"introduced":"0"},{"last_affected":"3ba8aca90e17e5410b7e8b227c9f29256ac3e875"}],"database_specific":{"extracted_events":[{"strategy":"ZeroIntroducedSingleVersion","range":[{"introduced":"0"},{"last_affected":"0.14.3"}],"source":"AFFECTED_FIELD"}]}}],"versions":["v0.14.3-rc.1","v0.14.3","v0.14.2-rc.1","v0.14.2","v0.14.1-rc.1","v0.14.1","v0.14.0-rc.1","v0.14.0","v0.11.91","v0.11.86","v0.11.79","v0.11.66","v0.11.53","v0.11.43","v0.11.34","v0.11.33","v0.11.29","v0.11.19","v0.11.4","v0.11","v0.11rc","v0.10.18","v0.10.8","v0.10","v0.10rc","v0.9.141","v0.9.128","v0.9.113","v0.9.97","v0.9.71","v0.9.60","v0.9.48","v0.9.46","v0.9.13","v0.9.0","v0.8.43","v0.8.25","v0.8.10","v0.8.0","v0.7.33","v0.7.22","v0.7.19","v0.7.6","v0.7.0","v0.6.15","v0.6.9","v0.6.3","v0.6.1","v0.5.13","v0.5.11","v0.5.9","v0.5.8","v0.5.5","v0.5.2","v0.5.0","v0.4.2","v0.4.1","v0.4.0","v0.3.1","v0.3.0","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-123012.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:L/SA:N"}]}