What’s Vulnerable › Vulnerabilities
CVE-2026-39374: Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint
- Severity: high (CVSS 7.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-07 · updated 2026-07-24
- Weakness: CWE-639
Description
Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless of workspace or project membership. The endpoint fetches issues by ID without filtering by workspace or project, enabling cross-boundary data modification. This vulnerability is fixed in 1.3.0.
Affected products
- makeplane plane: before 1.3.0 — fixed in 1.3.0
How to fix
Upgrade to a fixed version: makeplane plane 1.3.0. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-39374 or the next vulnerability affects your stack