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High severity7.1NVD Advisory· Published Aug 5, 2021· Updated Jun 17, 2026

CVE-2021-37859

CVE-2021-37859

Description

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3

Mattermost/Mattermostv53 versions
5.32.0+ 2 more
- (no CPE)range: 5.32.0
- (no CPE)
- cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*range: >=5.32.0,<5.34.5

Patches

Vulnerability mechanics

References

1

mattermost.com/security-updates/nvdVendor Advisory

News mentions

0

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