High severity · published Oct 5, 2026
CVE-2026-104968
Plane: Cross-workspace member enumeration via /api/workspaces/{slug}/entity-search/
8.7
CVSS
0.3%
EPSS
No
On KEV
Description
Plane is an open-source project management tool. Prior to 1.4.0, GET /api/workspaces/{slug}/entity-search/?query_type=user_mention returns workspace-member display names, UUIDs, and avatar URLs to any authenticated user who knows the workspace slug, even when the caller is not a workspace member. The endpoint also exposes ProjectMember rows under the same condition. SearchEndpoint in apps/api/plane/app/views/search/base.py inherits BaseAPIView with only permission_classes = [IsAuthenticated] and performs no workspace-membership check. This issue is fixed in 1.4.0.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
plane · makeplane
< 1.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104968
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104968
x_refsource_CONFIRM
https://github.com/makeplane/plane/security/advisories/GHSA-32q3-mqpc-3mhv
x_refsource_MISC
https://github.com/makeplane/plane/pull/9296
x_refsource_MISC
https://github.com/makeplane/plane/commit/28ae25b564351abaf8b36d4a3ba6d32f80fbf075
x_refsource_MISC
https://github.com/makeplane/plane/releases/tag/v1.4.0
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