Application-Level DoS via infinite re-render loop in user profile handling
Priority LOW 30CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
Mattermost versions 10.11.x <= 10.11.8, 11.1.x <= 11.1.1, 11.0.x <= 11.0.6 fail to prevent infinite re-renders on API errors which allows authenticated users to cause application-level DoS via triggering unbounded component re-render loops.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 11.2.0, 10.11.9, 11.1.2 +1github.com/mattermost/mattermost-server (Go): 10.11.9, 11.1.2, 11.0.7
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | 10.11.0 – 10.11.8; 11.1.0 – 11.1.1; 11.0.0 – 11.0.6 | 11.2.0, 10.11.9, 11.1.2, 11.0.7 | Patch available | CNA |
| — | github.com/mattermost/mattermost-server (Go) | 10.11.0 to before 10.11.9 | 10.11.9 | Patch available | GHSA-mx8m-v8qm-xwr8 |
| — | github.com/mattermost/mattermost-server (Go) | 11.1.0 to before 11.1.2 | 11.1.2 | Patch available | GHSA-mx8m-v8qm-xwr8 |
| — | github.com/mattermost/mattermost-server (Go) | 11.0.0 to before 11.0.7 | 11.0.7 | Patch available | GHSA-mx8m-v8qm-xwr8 |
- Mattermost VendorMattermost Affected 10.11.0 – 10.11.8; 11.1.0 – 11.1.1; 11.0.0 – 11.0.6 Fixed in 11.2.0, 10.11.9, 11.1.2, 11.0.7 Patch available CNA
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 10.11.0 to before 10.11.9 Fixed in 10.11.9 Patch available GHSA-mx8m-v8qm-xwr8
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 11.1.0 to before 11.1.2 Fixed in 11.1.2 Patch available GHSA-mx8m-v8qm-xwr8
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 11.0.0 to before 11.0.7 Fixed in 11.0.7 Patch available GHSA-mx8m-v8qm-xwr8
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | 10.11.0 to before 10.11.9; 11.0.0 to before 11.0.7; 11.1.0 to before 11.1.2 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 10.11.0 to before 10.11.9; 11.0.0 to before 11.0.7; 11.1.0 to before 11.1.2 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 11.2.0, 10.11.9, 11.1.2, 11.0.7
- Fix · GHSA-mx8m-v8qm-xwr8 github.com/mattermost/mattermost-server (Go) Fixed in 10.11.9 Advisory →
- Fix · GHSA-mx8m-v8qm-xwr8 github.com/mattermost/mattermost-server (Go) Fixed in 11.1.2 Advisory →
- Fix · GHSA-mx8m-v8qm-xwr8 github.com/mattermost/mattermost-server (Go) Fixed in 11.0.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14435
- 2026-10-03 Alias added: GHSA-mx8m-v8qm-xwr8
References
Other 5
- https://github.com/mattermost/mattermost/commit/613bb616cd62c584a606919e6978688e7b87d81e
- https://github.com/mattermost/mattermost/commit/9f7629504bc93f79af8d606329c025a687e143cd
- https://github.com/mattermost/mattermost/commit/cc6b77b271324796b72f1e6b82dba85a86462f9f
- https://github.com/mattermost/mattermost
- https://pkg.go.dev/vuln/GO-2026-4326
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-2025-14435 · CVE Program
- CVE-2025-14435 · NVD
- FIRST EPSS
- GHSA-mx8m-v8qm-xwr8 · GitHub Advisory Database · CC BY 4.0
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