Vulnerability Details : CVE-2018-21255
An issue was discovered in Mattermost Server before 5.1. Non-members of a channel could use the Channel PATCH API to modify that channel.
Exploit prediction scoring system (EPSS) score for CVE-2018-21255
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 21 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-21255
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:P/A:N |
8.0
|
2.9
|
NIST |
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2018-21255
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-21255
-
https://mattermost.com/security-updates/
Security Updates - Mattermost - Open Source, On-Prem or Private Cloud MessagingVendor Advisory
Products affected by CVE-2018-21255
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*