CVE-2026-6541
Last modified
CVE-2026-6541 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Mattermost versions 11.7.x <= 11.7.1, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to restrict metric configuration changes to the playbook being saved, which allows an authenticated user with team access to alter another user’s playbook metric settings via a crafted import or update request with a foreign metric ID. Mattermost Advisory ID: MMSA-2026-00653.
Description
Mattermost versions 11.7.x <= 11.7.1, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to restrict metric configuration changes to the playbook being saved, which allows an authenticated user with team access to alter another user’s playbook metric settings via a crafted import or update request with a foreign metric ID. Mattermost Advisory ID: MMSA-2026-00653
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost Server | >= 10.11.0, < 10.11.20 |
| Mattermost | Mattermost Server | >= 11.6.0, < 11.6.5 |
| Mattermost | Mattermost Server | >= 11.7.0, < 11.7.2 |
References
- https://mattermost.com/security-updatesVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-6541?
How severe is CVE-2026-6541?
How do I fix CVE-2026-6541?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-65404An authorization issue was addressed with improved state man…5.5
- CVE-2026-65405A memory initialization issue was addressed with improved me…5.5
- CVE-2026-65406A logic issue was addressed with improved validation. This i…5.5
- CVE-2026-65407A use after free issue was addressed with improved memory ma…5.5
- CVE-2026-65408An integer overflow was addressed with improved input valida…5.5
- CVE-2026-65409A type confusion issue was addressed with improved memory ha…5.5
- CVE-2026-65410The issue was addressed with improved checks. This issue is …7.5
- CVE-2026-65411A path handling issue was addressed with improved validation…5.5
- CVE-2026-65412A null pointer dereference was addressed with improved input…6.5
- CVE-2026-65413An integer overflow was addressed with improved input valida…5.5
- CVE-2026-65414An out-of-bounds write issue was addressed with improved bou…9.8
- CVE-2026-65415A race condition was addressed with additional validation. T…8.1
Are you affected by CVE-2026-6541?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST