Vulnerability · Published Aug 5, 2021 · Assigned by Mattermost
CVE-2021-37859Reflected XSS in OAuth Flow
High 7.1
In plain English
A high-severity cross-site scripting in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 89% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)3.3%top 11.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 5.32.0 – through 5.36.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
References
- https://mattermost.com/security-updates/ x_refsource_MISC