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TI-2026-67866 Aliases CVE-2026-105641

Hardcoded secret keys in Plane community deployments

Priority HIGH 82CWE-798Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-798.

Summary

Plane before 1.4.0 ships fixed, publicly known SECRET_KEY and LIVE_SERVER_SECRET_KEY defaults in its aio and cli community deployment manifests. These hardcoded credentials (CWE-798) stay active when operators do not override them, because the top-level setup.sh randomizes secrets only for the development Docker Compose path. An unauthenticated remote attacker who knows SECRET_KEY can forge Django-signed values to compromise accounts or sessions, and knowledge of LIVE_SERVER_SECRET_KEY bypasses live-service authentication on unchanged community deployments.

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 deployments/aio/community/ and deployments/cli/community/ manifests provide fixed, publicly known SECRET_KEY and LIVE_SERVER_SECRET_KEY defaults that remain active when operators do not override them. The top-level setup.sh randomizes secrets only for the development Docker Compose path, leaving unchanged aio and cli community deployments with shared production secrets. Knowledge of SECRET_KEY enables attackers to forge Django-signed values and compromise accounts or sessions. Knowledge of LIVE_SERVER_SECRET_KEY bypasses live-service authentication on unchanged community deployments. This issue is fixed in 1.4.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix Fixed plane (makeplane): 1.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

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, which fixes this issue. Operators of aio and cli community deployments should also replace any SECRET_KEY and LIVE_SERVER_SECRET_KEY values they have not changed.

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-2026-105641
  2. 2026-10-07 CISA SSVC decision points changed
  3. 2026-10-07 Priority changed: MEDIUM → HIGH

References

Other 4

  • 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
  • TI-2026-67857 Broken access control in Plane lets members self-join private projects CVSS 4.0HIGH 8.7
See all 65 →

Sources

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