CVE-2025-41423

Unauthorized Playbooks Post Deletion in Mattermost Playbooks Plugin

MEDIUM
4.3
CVSS Score
Published: April 24, 2025 at 06:50 AM UTC
Updated: June 17, 2026 at 09:22 AM UTC
2 products affected across 1 vendorMattermost ServerMattermost

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.4.0 ≤ v < 10.4.39.11.0 ≤ v < 9.11.1110.5.0
10.4.0 ≤ v ≤ 10.4.29.11.0 ≤ v ≤ 9.11.1010.4.010.5.09.11.0
Vendor states this is fixed in 10.4.3 (unaffected)
Vendor states this is fixed in 10.5.1 (unaffected)
Vendor states this is fixed in 10.6.0 (unaffected)
Vendor states this is fixed in 9.11.11 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-863

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