CVE-2026-104976

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.

CVSS

No CVSS.

References

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

Configurations

No configuration.

History

05 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-05 18:17

Updated : 2026-10-06 15:17

NVD link : CVE-2026-104976

Mitre link : CVE-2026-104976

CVE.ORG link : CVE-2026-104976

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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