{"action":"Upgrade code.gitea.io/gitea to 1.26.2 or later.","affected":[{"fixed":"1.26.2","introduced":"1.22.0"}],"component":"code.gitea.io/gitea","cve_ids":["CVE-2026-58426"],"ecosystem":"Go","epss":0.00301,"exploited":false,"fixed_versions":["1.26.2"],"ghsa_id":"GHSA-hg5r-vq93-9fv6","id":"tcs_01M5KFCGP8MFKQ5YCV4QK7DM8J","modified_at":"2026-07-27T17:11:37.933389676Z","published_at":"2026-07-21T20:36:38Z","references":["https://osv.dev/vulnerability/GHSA-hg5r-vq93-9fv6","https://github.com/go-gitea/gitea/security/advisories/GHSA-hg5r-vq93-9fv6","https://nvd.nist.gov/vuln/detail/CVE-2026-58426","https://github.com/go-gitea/gitea/pull/37707","https://github.com/go-gitea/gitea/commit/1c2d5e9b03f71dd12d450b2af9a79f2557b50226","https://blog.gitea.com/release-of-1.26.2","https://github.com/go-gitea/gitea","https://github.com/go-gitea/gitea/releases/tag/v1.26.2"],"severity":{"label":"critical","score":9.6},"sources":[{"source":"osv","source_id":"GHSA-hg5r-vq93-9fv6","url":"https://osv.dev/vulnerability/GHSA-hg5r-vq93-9fv6"}],"summary":"Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write"}