{"id":"CVE-2026-73800","title":"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","summary":"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…","severity":"high","cwe":["CWE-94","CWE-829"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:04:39.483","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73800","references":[{"url":"https://blog.gitea.com/release-of-1.27.2/","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38886","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/38897","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.2","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-r9ch-mqjm-g67v","label":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-14T15:36:14.030Z","vendor":"Gitea","product":"gitea/gitea","affected":["gitea/gitea >= 1.19.0 < 1.27.2"],"epss":0.00535,"epssPercentile":0.44971,"cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-18T13:33:30.814752Z"},"cvssSource":"adp","slug":"CVE-2026-73800","body":"## Overview\n\nGitea 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":224429,"id":"CVE-2026-73800","ts":1792331052066,"field":"cvss","old":null,"new":"8.8"},{"seq":224428,"id":"CVE-2026-73800","ts":1792331052066,"field":"severity","old":"none","new":"high"}]}