CVE-2026-105630
highPlane is an open-source project management tool.
Plane is an open-source project management tool. Prior to 1.4.0, an authenticated low-privilege workspace member, including a Guest, can upload an image/svg+xml file as a generic or issue attachment. The file retains the attacker-controlled Content-Type, and the asset-download endpoint creates a presigned URL with Content-Disposition: inline. In the default self-hosted MinIO deployment, the asset URL is served from the same origin as the Plane application, allowing embedded SVG JavaScript to execute in the application's security context. A victim, including a workspace administrator, who opens the link can have the session compromised through stored XSS, leading to account takeover. This issue is fixed in 1.4.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/makeplane/plane/commit/9dff20e04808286acb372119d88c666b802b1d50 security-advisories@github.com
- https://github.com/makeplane/plane/pull/9312 security-advisories@github.com
- https://github.com/makeplane/plane/releases/tag/v1.4.0 security-advisories@github.com
- https://github.com/makeplane/plane/security/advisories/GHSA-ch8j-vr4r-qf6h security-advisories@github.com
- https://github.com/makeplane/plane/security/advisories/GHSA-ch8j-vr4r-qf6h 134c704f-9b21-4f2e-91b3-4a467353bcc0