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OpenAdvisories
Medium · 5.3 CVE-2026-33209 EUVD-2026-13873GHSA-762r-27w2-q22j

Avo has a XSS vulnerability on `return_to` param

Published Mar 20, 2026 · Updated Mar 24, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
avo-hq avo < 3.30.3 —

Affected packages

EcosystemPackageAffectedFixedRecord
RubyGems avo < 3.30.3 3.30.3 GHSA-762r-27w2-q22j

References