Playbook plugin crash via missing interface type assertion
Priority LOW 34CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Mattermost fails to validate the type of the "reminder" body request parameter allowing an attacker to crash the Playbook Plugin when updating the status dialog.
Why it matters now
EPSS 0.00649 51st percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 9.2.2, 8.1.6, 9.0.4 +1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | up to 8.1.5; up to 9.0.3; up to 9.1.2; up to 9.2.1 | 9.2.2, 8.1.6, 9.0.4, 9.1.3 | Patch available | CNA |
- Mattermost VendorMattermost Affected up to 8.1.5; up to 9.0.3; up to 9.1.2; up to 9.2.1 Fixed in 9.2.2, 8.1.6, 9.0.4, 9.1.3 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | up to 7.8.14; 8.0.0 – 8.1.5; 9.0.0 – 9.0.3; 9.1.0 – 9.1.2; 9.2.0 – 9.2.1 | Vulnerable | Mattermost |
| cpe:2.3:a:mattermost:mattermost_server:9.1.1:*:*:*:*:*:*:* | 9.1.1 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions up to 7.8.14; 8.0.0 – 8.1.5; 9.0.0 – 9.0.3; 9.1.0 – 9.1.2; 9.2.0 – 9.2.1 Vulnerable ·Mattermost
- cpe:2.3:a:mattermost:mattermost_server:9.1.1:*:*:*:*:*:*:* Versions 9.1.1 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 9.2.2, 8.1.6, 9.0.4, 9.1.3
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49607
- 2026-10-03 Alias added: GHSA-g6qp-9v7f-3wh3
- 2026-10-16 EPSS moved to the 50th–90th percentile
References
Advisory 1
More Mattermost Server vulnerabilities
- 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
Sources
- CVE-2023-49607 · CVE Program
- CVE-2023-49607 · NVD
- FIRST EPSS
- GHSA-g6qp-9v7f-3wh3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences