Resource allocation without limits in Mattermost
Priority LOW 30CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
A denial-of-service vulnerability in the Mattermost allows an authenticated user to crash the server via multiple requests to one of the API endpoints which could fetch a large amount of data.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00649 51st percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 7.4.0github.com/mattermost/mattermost-server (Go): 7.1.4, 7.2.1, 7.3.1
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 | all versions | 7.4.0 | Patch available | CNA |
| — | github.com/mattermost/mattermost-server (Go) | before 7.1.4 | 7.1.4 | Patch available | GHSA-v42f-hq78-8c5m |
| — | github.com/mattermost/mattermost-server (Go) | 7.2.0 to before 7.2.1 | 7.2.1 | Patch available | GHSA-v42f-hq78-8c5m |
| — | github.com/mattermost/mattermost-server (Go) | 7.3.0 to before 7.3.1 | 7.3.1 | Patch available | GHSA-v42f-hq78-8c5m |
- Mattermost VendorMattermost Affected all versions Fixed in 7.4.0 Patch available CNA
- github.com/mattermost/mattermost-server (Go) Vendor— Affected before 7.1.4 Fixed in 7.1.4 Patch available GHSA-v42f-hq78-8c5m
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 7.2.0 to before 7.2.1 Fixed in 7.2.1 Patch available GHSA-v42f-hq78-8c5m
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 7.3.0 to before 7.3.1 Fixed in 7.3.1 Patch available GHSA-v42f-hq78-8c5m
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 7.4.0
- Fix · GHSA-v42f-hq78-8c5m github.com/mattermost/mattermost-server (Go) Fixed in 7.1.4 Advisory →
- Fix · GHSA-v42f-hq78-8c5m github.com/mattermost/mattermost-server (Go) Fixed in 7.2.1 Advisory →
- Fix · GHSA-v42f-hq78-8c5m github.com/mattermost/mattermost-server (Go) Fixed in 7.3.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-4045
- 2026-10-03 Alias added: GHSA-v42f-hq78-8c5m
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More Mattermost vulnerabilities
- TI-2024-26695 Malicious remote can invite itself to an arbitrary local channel CVSS 3.1CRITICAL 9.6
- TI-2023-02056 Oauth authorization codes do not expire when deauthorizing an oauth2 app CVSS 3.1CRITICAL 9.1
- TI-2019-15069 An issue was discovered in Mattermost Mobile Apps before 1.26.0. CVSS 3.1CRITICAL 9.1
- TI-2024-26233 Malicious remote can add users to arbitrary teams and channels CVSS 3.1HIGH 8.7
- TI-2024-26746 Permanently local data deletion by malicious remote CVSS 3.1HIGH 8.7
- TI-2023-06508 Injection in Mattermost CVSS 3.1HIGH 8.8
Sources
- CVE-2022-4045 · CVE Program
- CVE-2022-4045 · NVD
- FIRST EPSS
- GHSA-v42f-hq78-8c5m · 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