High 8.5Published Oct 5, 2026

CVE-2026-104971Plane: Cross-Workspace Asset Duplication IDOR + WorkspaceFileAssetEndpoint and FileAssetEndpoint Missing Authorization

Updated under an hour ago (2026-10-19 09:50 UTC)

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It affects makeplane plane. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.35%, higher than 27% of scored CVEs.

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Exploited in the last 30 days

Plane is an open-source project management tool. Prior to 1.4.0, DuplicateAssetEndpoint fetches a source FileAsset without limiting it to the caller's workspace, allowing cross-workspace asset duplication. WorkspaceFileAssetEndpoint and the legacy FileAssetEndpoint omit workspace authorization, allowing authenticated users to read, create, modify, or delete assets in workspaces where they are not members. Separately, WorkspaceViewViewSet.retrieve lacks the authorization decorator used by its sibling actions, exposing an unauthorized workspace-view read surface. This issue is fixed in 1.4.0.

CVSS: 8.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness (CWE): CWE-639, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.35% (percentile 27)
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

makeplane plane makeplane:plane (from the name)	before 1.4.0	CNA record

References

https://github.com/makeplane/plane/security/advisories/GHSA-p57q-8hh8-7fc7x-refsource-confirm
https://github.com/makeplane/plane/pull/8885x-refsource-misc
https://github.com/makeplane/plane/pull/9288x-refsource-misc
https://github.com/makeplane/plane/commit/4577dc3f7a6b5a198602b602a45c6b0abdc7204bx-refsource-misc
https://github.com/makeplane/plane/commit/ac11c3ef7939e31201fa92a17de106906025590fx-refsource-misc
https://github.com/makeplane/plane/releases/tag/v1.4.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.