CVE-2026-73814: Gitea repository ownership escalation by administrators

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-14 · updated 2026-10-18
Weakness: CWE-266

Description

Gitea's collaboration access-mode endpoint accepts the Owner access mode from an authenticated repository collaborator with Admin access. The collaborator can promote their effective permissions from Admin to Owner and then perform owner-only operations, including transferring the repository to their own account. This bypasses the intended boundary between repository administration and ownership.

Affected products

Gitea Open Source Git Server: through 1.27.1

References

https://blog.gitea.com/release-of-1.27.2/
https://github.com/go-gitea/gitea/pull/38894
https://github.com/go-gitea/gitea/pull/38895
https://github.com/go-gitea/gitea/releases/tag/v1.27.2
https://github.com/go-gitea/gitea/security/advisories/GHSA-h62v-wmrr-5qjq

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