{"cve":"CVE-2026-27780","nvd":{"published":"2026-07-03T21:16:59.347","modified":"2026-10-25T15:10:00.147","status":"Deferred","description":"Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-863"],"references":["https://blog.gitea.com/release-of-1.26.0/","https://github.com/go-gitea/gitea/pull/36963","https://github.com/go-gitea/gitea/releases/tag/v1.26.0"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-27780","score":0.00638,"percentile":0.50263,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vhq7-fwwh-7hjf","url":"https://osv.dev/vulnerability/GHSA-vhq7-fwwh-7hjf","summary":"Gitea pre-receive hook scanner errors allow branch-protection bypass","modified":"2026-09-10T15:25:56.958578363Z","packages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","ranges":["<1.26.0"],"fixed":["1.26.0"]}]},{"id":"GO-2026-6346","url":"https://osv.dev/vulnerability/GO-2026-6346","summary":"Gitea pre-receive hook scanner errors allow branch-protection bypass in code.gitea.io/gitea","modified":"2026-09-10T15:15:12.307824043Z","packages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","ranges":["<1.26.0"],"fixed":["1.26.0"]}]}],"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."]}