Incorrect Session Creation with Desktop SSO
Priority LOW 17CWE-303Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Mattermost versions 9.11.X <= 9.11.1, 9.5.x <= 9.5.9 icorrectly issues two sessions when using desktop SSO - one in the browser and one in desktop with incorrect settings.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 10.0.0, 9.11.2, 9.5.10github.com/mattermost/mattermost/server/v8 (Go): 8.0.0-20240821220019-0d6b1070a26f
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 | 9.11.0 – 9.11.1; 9.5.0 – 9.5.9 | 10.0.0, 9.11.2, 9.5.10 | Patch available | CNA |
| — | github.com/mattermost/mattermost/server/v8 (Go) | before 8.0.0-20240821220019-0d6b1070a26f | 8.0.0-20240821220019-0d6b1070a26f | Patch available | GHSA-hm57-h27x-599c |
- Mattermost VendorMattermost Affected 9.11.0 – 9.11.1; 9.5.0 – 9.5.9 Fixed in 10.0.0, 9.11.2, 9.5.10 Patch available CNA
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.0.0-20240821220019-0d6b1070a26f Fixed in 8.0.0-20240821220019-0d6b1070a26f Patch available GHSA-hm57-h27x-599c
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | 9.5.0 – 9.5.9; 9.11.0 – 9.11.1 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* Versions 9.5.0 – 9.5.9; 9.11.0 – 9.11.1 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 10.0.0, 9.11.2, 9.5.10
- Fix · GHSA-hm57-h27x-599c github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.0.0-20240821220019-0d6b1070a26f Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-10214
- 2026-10-03 Alias added: GHSA-hm57-h27x-599c
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-2024-10214 · CVE Program
- CVE-2024-10214 · NVD
- FIRST EPSS
- GHSA-hm57-h27x-599c · 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