{"cve":"CVE-2026-27779","nvd":{"published":"2026-07-03T21:16:59.257","modified":"2026-10-25T15:10:00.147","status":"Deferred","description":"Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-284"],"references":["https://blog.gitea.com/release-of-1.25.5/","https://github.com/go-gitea/gitea/pull/36810","https://github.com/go-gitea/gitea/pull/36836","https://github.com/go-gitea/gitea/releases/tag/v1.25.5"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-27779","score":0.00582,"percentile":0.47543,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-v8f2-2ghq-9whv","url":"https://osv.dev/vulnerability/GHSA-v8f2-2ghq-9whv","summary":"Gitea forwarded-proto validation allows canonical URL spoofing","modified":"2026-09-10T15:25:58.380895208Z","packages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","ranges":["<1.25.5"],"fixed":["1.25.5"]}]},{"id":"GO-2026-6345","url":"https://osv.dev/vulnerability/GO-2026-6345","summary":"Gitea forwarded-proto validation allows canonical URL spoofing in code.gitea.io/gitea","modified":"2026-09-10T15:15:12.904557660Z","packages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","purl":"pkg:golang/code.gitea.io/gitea","ranges":["<1.25.5"],"fixed":["1.25.5"]}]}],"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."]}