CVE-2025-46702Mattermost Playbooks allows privilege escalation through improper access control in playbook run participant management
- 5.4MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions when adding participants to playbook runs. This allows authenticated users with member-level permissions to bypass system admin restrictions and add or remove users to/from private channels via the playbook run participants feature, even when the 'Manage Members' permission has been explicitly removed. This can lead to unauthorized access to sensitive channel content and allow guest users to gain channel management privileges.
Timeline
ID reserved
By Mattermost
- 38 days later
· 38 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| MattermostCNA (assigner) | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
- affected 10.5.0 – ≤ 10.5.5
- affected 9.11.0 – ≤ 9.11.15
- affected 10.8.0
- affected 10.7.0 – ≤ 10.7.2
- affected 10.6.0 – ≤ 10.6.5
- unaffected 10.9.0
- unaffected 10.5.6
- unaffected 9.11.16
- unaffected 10.8.1
- unaffected 10.7.3
- unaffected 10.6.6
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/mattermost/mattermost-serverGHSA-v8fr-vxmw-6mf6 (opens in a new tab)
- Gogithub.com/mattermost/mattermost/server/v8GHSA-v8fr-vxmw-6mf6 (opens in a new tab)
What to do
Solution: Update Mattermost to versions 10.9.0, 10.5.6, 9.11.16, 10.8.1, 10.7.3, 10.6.6 or higher.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-19559 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-v8fr-vxmw-6mf6 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-46702)Record last updated .