CVE-2026-33209 — Avo has a XSS vulnerability on `return_to` param
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.30.3, a reflected cross-site scripting (XSS) vulnerability exists in the return_to query par…
Published: 2026-03-20 · CVSS: 5.3 · CVSS 4.0
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.30.3, a reflected cross-site scripting (XSS) vulnerability exists in the return_to query parameter used in the avo interface. An attacker can craft a malicious URL that injects arbitrary JavaScript, which is executed when he clicks a dynamically generated navigation button. This issue has been patched in version 3.30.3.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7