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TI-2026-67768 Aliases CVE-2026-104965

Plane lets users link issues from other workspaces

Priority MEDIUM 58CWE-639Published · Updated

Key facts

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

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

Summary

Plane, an open-source project management tool, before 1.4.0 has an authorization bypass (CWE-639) in its issue-relation endpoint. The endpoint accepts issue UUIDs in the request body without checking that they belong to the caller's workspace. An authenticated user can link their own issues to issues in any other workspace on the instance, leaking issue metadata through activity events.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Plane is an open-source project management tool. Prior to 1.4.0, the issue-relation endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can create relations linking their own issues to issues in any other workspace on the instance, leaking issue metadata through activity events. This issue is fixed in 1.4.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00217 12th percentileScored 2026-11-07
Fix Fixed plane (makeplane): 1.4.0

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 1.4.01.4.0Patch availableCNA
  • plane Vendormakeplane Affected before 1.4.0 Fixed in 1.4.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*——makeplane
  • cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:* Versions — — ·makeplane

Remediation

Upgrade Plane to version 1.4.0 or later, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA plane (makeplane) Fixed in 1.4.0

Timeline

  1. 2026-10-05 Threatist record created from CVE-2026-104965
  2. 2026-10-05 CISA SSVC decision points changed

References

Other 4

  • TI-2026-67866 Hardcoded secret keys in Plane community deployments CVSS 3.1CRITICAL 9.8
  • TI-2026-67865 Account takeover in Plane via unverified OAuth email matching CVSS 3.1CRITICAL 9.1
  • TI-2026-67863 Plane magic-code login lacks rate limiting, allowing OTP brute force CVSS 3.1CRITICAL 9.1
  • TI-2024-32097 Plane allows server side request forgery via /_next/image endpoint CVSS 3.1CRITICAL 9.3
  • TI-2026-67862 Cross-project asset hijacking in Plane allows file takeover CVSS 3.1CRITICAL 9.6
  • TI-2026-67861 Server-side request forgery in Plane webhook delivery via redirects CVSS 3.1CRITICAL 9.9
See all 65 →

Sources

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