{"id":"CVE-2026-73800","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-73800","generatedAt":"2026-10-28T03:42:05.804Z","title":"A fork author can modify a referenced reusable workflow so attacker-controlled code executes with the repository and organization secrets available to that event.","description":"Gitea resolves local reusable workflow files from a fork's head commit when a trusted base-branch workflow runs for a pull_request_target event. A fork author can modify a referenced reusable workflow so attacker-controlled code executes with the repository and organization secrets available to that event. Exploitation requires a base workflow that calls a local reusable workflow, and bypasses the intended separation between trusted base code and untrusted fork code.","published":"2026-10-14T15:17:25.000Z","lastModified":"2026-10-18T14:16:56.000Z","status":"Deferred","sourceIdentifier":"88ee5874-cf24-4952-aea0-31affedb7ff2","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-94","CWE-829"],"affected":[],"epss":{"score":0.00535,"percentile":0.44971,"date":"2026-10-27","history":[{"date":"2026-10-15","score":0.00223,"percentile":0.11986}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-18T15:45:09.000Z","detail":{"from":null,"score":"8.8","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 8.8 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-14T15:17:25.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-14T15:17:24.560Z"},"summary":"New CVE, high severity (CVSS 8.8)."}],"references":[{"url":"https://blog.gitea.com/release-of-1.27.2/","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38886","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38897","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.2","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-r9ch-mqjm-g67v","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73800","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}