CVE-2016-11070: Mattermost Server is vulnerable to XSS through customizable theme color-code values

May 24, 2022 (updated October 22, 2025)

An issue was discovered in Mattermost Server before 3.1.0. It allows XSS via theme color-code values.

References

github.com/advisories/GHSA-h8qw-xqm9-q66j
github.com/mattermost/mattermost
github.com/mattermost/mattermost/commit/c5deb333db40e4e527f98edb93b41d1b66cfec5f
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2016-11070

Code Behaviors & Features

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