CVE-2022-1002

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-80 CWE-79

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= unspecified, <= 6.3

References

https://hackerone.com/reports/1443567Exploit, Third Party Advisory
https://mattermost.com/security-updates/Release Notes, Vendor Advisory
https://hackerone.com/reports/1443567Exploit, Third Party Advisory
https://mattermost.com/security-updates/Release Notes, Vendor Advisory

Timeline

Published: Mar 18, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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