{"schema":"threatline.record/2","record":{"id":"CVE-2026-73539","aliases":["GHSA-579w-82gf-89m2"],"summary":"Gitea external renderer argument injection and code execution","details":"Gitea substitutes a URL derived from the markup Context field into external renderer command templates without escaping the reference path before shell-style argument splitting. A crafted Context can inject additional renderer arguments, including options that load executable filter files. On deployments using a susceptible external renderer such as pandoc, a user who can place a filter file at an accessible path can cause it to execute as the Gitea service account; the public repository markup endpoint itself can be reachable without authentication.","categories":["Unclassified"],"product":"Gitea","vendor":"Gitea","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-73539","source_modified_at":"2026-10-18T13:32:51.154Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Gitea","vendor":"Gitea","versions":[{"lessThanOrEqual":"1.27.1","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"GitHub Advisory Database","source_url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2","source_modified_at":"2026-08-14T16:34:36Z","fetched_at":"2026-10-23T19:58:35.668311Z","package":{"ecosystem":"","name":"gitea"},"range":"<= 1.27.1"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2","source_modified_at":"2026-08-14T16:34:36Z","fetched_at":"2026-10-23T19:58:35.668311Z","package":{"ecosystem":"","name":"gitea"},"version":"1.27.2"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00475,"percentile":0.40088,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:37:44.243Z","modified_at":"2026-10-18T13:32:51.154Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-73539","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-18T13:32:51.154Z"},{"source":"GitHub Advisory Database","url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2","fetched_at":"2026-10-23T19:58:35.668311Z","source_modified_at":"2026-08-14T16:34:36Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-73539","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-579w-82gf-89m2","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://blog.gitea.com/release-of-1.27.2/","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/go-gitea/gitea/pull/38885","tags":["patch"]},{"source":"CVE List","url":"https://github.com/go-gitea/gitea/pull/38898","tags":["patch"]},{"source":"CVE List","url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.2","tags":["release-notes"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-18T13:32:47.376516Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-18T13:32:51.154Z","content_hash":"e76c943fda972354876bedcebeaa09cb817921c64838522471d07e810d1db49a"}}