{"action":"Upgrade code.gitea.io/gitea to 1.26.4 or later.","affected":[{"fixed":"1.26.4","introduced":"0"}],"component":"code.gitea.io/gitea","cve_ids":["CVE-2026-58421"],"ecosystem":"Go","epss":0.00396,"exploited":false,"fixed_versions":["1.26.4"],"ghsa_id":"GHSA-v96j-25gv-g2w9","id":"tcs_01M5KGRP6MN3H3KARQDHDBHYCW","modified_at":"2026-07-27T17:00:26.007606957Z","published_at":"2026-07-27T15:32:45Z","references":["https://osv.dev/vulnerability/GO-2026-6077","https://github.com/go-gitea/gitea/security/advisories/GHSA-v96j-25gv-g2w9","https://nvd.nist.gov/vuln/detail/CVE-2026-58421","https://blog.gitea.com/release-of-1.26.3-and-1.26.4","https://github.com/go-gitea/gitea/commit/ea35af1b68d57522c7686618bd61d3216d91589f","https://github.com/go-gitea/gitea/pull/38011","https://github.com/go-gitea/gitea/releases/tag/v1.26.4"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GO-2026-6077","url":"https://osv.dev/vulnerability/GO-2026-6077"},{"source":"nvd","source_id":"CVE-2026-58421","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58421"}],"summary":"Gitea: Unauthenticated ReDoS via CODEOWNERS pattern matching allows denial of service in code.gitea.io/gitea"}