CVE-2021-37859

6.1 mediumEPSS 3.3%

Medium (6.1) in mattermost mattermost. EPSS 3.3% chance of exploitation in the next 30 days.

Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.

Severity

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 3.3% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-08-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19