Read the docs
TI-2026-28361 Aliases CVE-2026-39374

Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint

Priority HIGH 67CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed plane (makeplane): 1.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
makeplaneplanebefore 1.3.01.3.0Patch availableCNA
  • plane Vendormakeplane Affected before 1.3.0 Fixed in 1.3.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*before 1.3.0Vulnerablemakeplane
  • cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:* Versions before 1.3.0 Vulnerable ·makeplane

Remediation

  • Fix · CNA plane (makeplane) Fixed in 1.3.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-39374

References

Exploit 1

  • TI-2024-32097 Plane allows server side request forgery via /_next/image endpoint CVSS 3.1CRITICAL 9.3
  • TI-2026-34237 Authorization bypass in makeplane plane CVSS 3.1HIGH 8.3
  • TI-2023-02127 Plane v0.7.1 - Unauthorized access to files CVSS 3.1HIGH 7.5
  • TI-2026-28725 Plane has a Server-Side Request Forgery (SSRF) in Favicon Fetching CVSS 3.1HIGH 7.7
  • TI-2023-14603 Plane 0.7.1 - Insecure file upload CVSS 3.1HIGH 7.1
  • TI-2026-09315 Plane 1.3.1 - Stored XSS in intake issue description_html CVSS 4.0MEDIUM 6.9
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences