CVE-2019-20865
HIGHCVSS 8.8/10EPSS 0.49%
Last modified
CVE-2019-20865 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Mattermost Server before 5.12.0, 5.11.1, 5.10.2, 5.9.2, and 4.10.10. The login page allows CSRF.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 5.12.0, 5.11.1, 5.10.2, 5.9.2, and 4.10.10. The login page allows CSRF.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mattermost | Mattermost Server | < 4.10.10 | — |
| Mattermost | Mattermost Server | >= 5.9.0, < 5.9.2 | — |
| Mattermost | Mattermost Server | >= 5.10.0, < 5.10.2 | — |
| Mattermost | Mattermost Server | >= 5.11.0, < 5.11.1 | — |
| Mattermost | Mattermost Server | 5.12.0 | Rc1 |
References
- https://mattermost.com/security-updates/Vendor Advisory
- https://mattermost.com/security-updates/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-20865?
An issue was discovered in Mattermost Server before 5.12.0, 5.11.1, 5.10.2, 5.9.2, and 4.10.10. The login page allows CSRF.
How severe is CVE-2019-20865?
CVE-2019-20865 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20865?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-20865?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST