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

Detect and mitigate CVE-2016-11070 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →