Medium severity · published Oct 5, 2026
CVE-2026-104967
Plane: Cross-workspace association destruction and issue mutation/read via unscoped queries in BulkDeleteIssuesEndpoint and SubIssuesEndpoint
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
Plane is an open-source project management tool. Prior to 1.4.0, BulkDeleteIssuesEndpoint and SubIssuesEndpoint in apps/api/plane/app/views/issue/ accept body- or URL-supplied issue IDs and operate on them without checking that the IDs belong to the caller's workspace and project. The permission decorator on each endpoint validates only that the caller is a member or administrator of the workspace and project named in the URL. BulkDeleteIssuesEndpoint can destroy CycleIssue and ModuleIssue associations belonging to foreign issues. SubIssuesEndpoint can re-parent foreign issues under an attacker-selected issue and return the foreign issues' metadata. This issue is fixed in 1.4.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% 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-2026-104967
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104967
x_refsource_CONFIRM
https://github.com/makeplane/plane/security/advisories/GHSA-6cw7-h92q-p9hg
x_refsource_MISC
https://github.com/makeplane/plane/pull/9270
x_refsource_MISC
https://github.com/makeplane/plane/commit/ad73ca300ce35e4d4d231a933de6f20f8203f3df
x_refsource_MISC
https://github.com/makeplane/plane/releases/tag/v1.4.0
More from plane
9.9
CVE-2026-105636
Plane: SSRF via HTTP redirect in webhook delivery (allow_redirects not set)
9.8
CVE-2026-105641
Plane: Hardcoded SECRET_KEY and LIVE_SERVER_SECRET_KEY shipped in aio/cli community deployment manifests — session forgery and live-server auth bypass
9.8
CVE-2026-105639
Plane: Pre-auth workspace invitation hijack via email-squat and self-served invitation token leak in Plane
9.6
CVE-2026-105637
Plane: Cross-Project Asset Hijacking via 'ProjectBulkAssetEndpoint' (sibling of CVE-2026-46558)
9.1
CVE-2026-105640
Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)