CVE-2026-27937: October CMS: Reflected XSS via DataTable Form Widget

April 21, 2026 (updated April 24, 2026)

A reflected Cross-Site Scripting (XSS) vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping.

References

github.com/advisories/GHSA-jj38-h5w5-mvpf
github.com/octobercms/october
github.com/octobercms/october/security/advisories/GHSA-jj38-h5w5-mvpf
nvd.nist.gov/vuln/detail/CVE-2026-27937

Code Behaviors & Features

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