CVE-2017-18889
MEDIUMCVSS 4.3/10EPSS 0.66%
Last modified
CVE-2017-18889 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mattermost | Mattermost Server | < 4.1.2 | — |
| Mattermost | Mattermost Server | >= 4.2.0, < 4.2.1 | — |
| Mattermost | Mattermost Server | 4.3.0 | 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-2017-18889?
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.
How severe is CVE-2017-18889?
CVE-2017-18889 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.
How do I fix CVE-2017-18889?
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.
Are you affected by CVE-2017-18889?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST