CVE-2026-33209

MediumCVSS 6.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
avo-hq	avo	< 3.30.3

References

https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7dPatch
https://github.com/avo-hq/avo/pull/4330Issue Tracking, Patch
https://github.com/avo-hq/avo/releases/tag/v3.30.3Product, Release Notes
https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22jVendor Advisory

Timeline

Published: Mar 20, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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