Bug 2552368 (CVE-2026-73800)

Summary: CVE-2026-73800 code.gitea.io/gitea: Gitea: arbitrary code execution via untrusted reusable workflow resolution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gbenhaim, niyer, twaugh
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Gitea. When executing an automated workflow triggered by a pull request, Gitea improperly loads local reusable workflow definitions from the untrusted fork rather than the trusted target repository. A remote attacker submitting a pull request can exploit this flaw to achieve arbitrary code execution in the context of the base repository, potentially exposing repository and organization secrets.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-14 14:53:48 UTC 
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.