CVE-2026-104979
highPlane is an open-source project management tool.
Plane is an open-source project management tool. Prior to 1.4.0, IntakeIssuePublicViewSet.create in Plane v1.3.1 writes description_html through Issue.objects.create(...) without calling validate_html_content from nh3. Any authenticated user, including a new user with no workspace memberships, can plant arbitrary HTML in a project that has a published DeployBoard with intake enabled. When a project member or viewer of a closed intake item clicks the planted link, the TipTap \tjavascript: parser bypass and the target="_self" click handler execute JavaScript in the viewer's session and exfiltrate a long-lived API token. 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/0d58adb69d859fc94c43b9d68fadd77e810d5ed1 security-advisories@github.com
- https://github.com/makeplane/plane/pull/9287 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-hh2r-3hwp-mvq3 security-advisories@github.com
- https://github.com/makeplane/plane/security/advisories/GHSA-hh2r-3hwp-mvq3 134c704f-9b21-4f2e-91b3-4a467353bcc0