Read the docs
TI-2025-27588 Aliases CVE-2025-41423GHSA-fr22-5377-f3p7

Unauthorized Playbooks Post Deletion in Mattermost Playbooks Plugin

Priority LOW 20CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate permissions for the API endpoint /plugins/playbooks/api/v0/signal/keywords/ignore-thread, allowing any user or attacker to delete posts containing actions created by the Playbooks bot, even without channel access or appropriate permissions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 10.6.0, 10.4.3, 10.5.1 +1github.com/mattermost/mattermost-plugin-playbooks (Go): 1.41.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
MattermostMattermost10.4.0 – 10.4.2; 10.5.0; 9.11.0 – 9.11.1010.6.0, 10.4.3, 10.5.1, 9.11.11Patch availableCNA
—github.com/mattermost/mattermost-plugin-playbooks (Go)2.0.0 and later—No fix listedGHSA-fr22-5377-f3p7
—github.com/mattermost/mattermost-plugin-playbooks (Go)before 1.41.01.41.0Patch availableGHSA-fr22-5377-f3p7
—github.com/mattermost/mattermost/server/v8 (Go)before 8.0.0-20250218121836-2b5275d871368.0.0-20250218121836-2b5275d87136Patch availableGHSA-fr22-5377-f3p7
—github.com/mattermost/mattermost/server/v8 (Go)10.4.0 and later—No fix listedGHSA-fr22-5377-f3p7
—github.com/mattermost/mattermost/server/v8 (Go)10.5.0 and later—No fix listedGHSA-fr22-5377-f3p7
—github.com/mattermost/mattermost/server/v8 (Go)9.11.0 and later—No fix listedGHSA-fr22-5377-f3p7
  • Mattermost VendorMattermost Affected 10.4.0 – 10.4.2; 10.5.0; 9.11.0 – 9.11.10 Fixed in 10.6.0, 10.4.3, 10.5.1, 9.11.11 Patch available CNA
  • github.com/mattermost/mattermost-plugin-playbooks (Go) Vendor— Affected 2.0.0 and later Fixed in — No fix listed GHSA-fr22-5377-f3p7
  • github.com/mattermost/mattermost-plugin-playbooks (Go) Vendor— Affected before 1.41.0 Fixed in 1.41.0 Patch available GHSA-fr22-5377-f3p7
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.0.0-20250218121836-2b5275d87136 Fixed in 8.0.0-20250218121836-2b5275d87136 Patch available GHSA-fr22-5377-f3p7
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 10.4.0 and later Fixed in — No fix listed GHSA-fr22-5377-f3p7
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 10.5.0 and later Fixed in — No fix listed GHSA-fr22-5377-f3p7
  • github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected 9.11.0 and later Fixed in — No fix listed GHSA-fr22-5377-f3p7

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*9.11.0 to before 9.11.11; 10.4.0 to before 10.4.3VulnerableMattermost
cpe:2.3:a:mattermost:mattermost_server:10.5.0:-:*:*:*:*:*:*10.5.0VulnerableMattermost
  • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 9.11.0 to before 9.11.11; 10.4.0 to before 10.4.3 Vulnerable ·Mattermost
  • cpe:2.3:a:mattermost:mattermost_server:10.5.0:-:*:*:*:*:*:* Versions 10.5.0 Vulnerable ·Mattermost

Remediation

  • Fix · CNA Mattermost (Mattermost) Fixed in 10.6.0, 10.4.3, 10.5.1, 9.11.11
  • Fix · GHSA-fr22-5377-f3p7 github.com/mattermost/mattermost-plugin-playbooks (Go) Fixed in 1.41.0 Advisory →
  • Fix · GHSA-fr22-5377-f3p7 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.0.0-20250218121836-2b5275d87136 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-41423
  2. 2026-10-03 Alias added: GHSA-fr22-5377-f3p7

References

Advisory 2

Other 3

  • TI-2025-18933 Arbitrary file read in Mattermost Boards via import & export board archive CVSS 3.1CRITICAL 9.9
  • TI-2025-04465 Path Traversal Leading to RCE by Any Authenticated Mattermost User CVSS 3.1CRITICAL 9.9
  • TI-2017-14068 An issue was discovered in Mattermost Server before 3.6.2. CVSS 3.1CRITICAL 9.8
  • TI-2017-14060 An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. CVSS 3.1CRITICAL 9.8
  • TI-2017-14048 An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. CVSS 3.1CRITICAL 9.8
  • TI-2025-14360 Arbitrary file read via block duplication in Mattermost Boards CVSS 3.1CRITICAL 9.9
See all 505 →

Sources

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