CVE-2026-42150: wlc: print_html outputs API data without HTML escaping

April 24, 2026 (updated May 4, 2026)

The HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser.

References

github.com/WeblateOrg/wlc
github.com/WeblateOrg/wlc/commit/0f3e58f6d7457b05d48ef40f579a172c4c8b8469
github.com/WeblateOrg/wlc/pull/1327
github.com/WeblateOrg/wlc/security/advisories/GHSA-gx2m-mcc2-r4p3
github.com/advisories/GHSA-gx2m-mcc2-r4p3
nvd.nist.gov/vuln/detail/CVE-2026-42150

Code Behaviors & Features

Detect and mitigate CVE-2026-42150 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →