CVE-2018-21263
HIGHCVSS 8.8/10EPSS 0.93%
Last modified
CVE-2018-21263 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.. EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Mattermost | Mattermost Server | < 4.5.2 | — |
| Mattermost | Mattermost Server | >= 4.6.0, < 4.6.2 | — |
| Mattermost | Mattermost Server | 4.7.0 | 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-2018-21263?
An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. An attacker could authenticate to a different user's account via a crafted SAML response.
How severe is CVE-2018-21263?
CVE-2018-21263 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.
How do I fix CVE-2018-21263?
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-2018-21263?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST