CVE-2026-104976

UNKNOWN 0.0

Plane: SSRF in Gitea OAuth

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Plane is an open-source project management tool. Prior to 1.4.0, Plane validates GITEA_HOST only for its URL scheme and does not reject hosts that resolve to private or internal IP addresses. The four outbound requests in the Gitea OAuth flow are derived from this unvalidated host and do not call validate_url(). In addition, avatar_url is taken from the Gitea user's profile, where users can configure external avatar URLs. After an administrator enables Gitea OAuth for a legitimate instance, a Gitea user can set an internal URL as the profile avatar and log in through Gitea, causing Plane to fetch the internal target without validation. This issue is fixed in 1.4.0.

CWE	CWE-918
Vendor	makeplane
Product	plane
Published	Oct 5, 2026

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Affected Versions

makeplane / plane

< 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/makeplane/plane/security/advisories/GHSA-hx79-5pj5-qh42 github.com: https://github.com/makeplane/plane/pull/9163 github.com: https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615 github.com: https://github.com/makeplane/plane/releases/tag/v1.4.0