Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Avohq | Avo | < 3.30.3 |
Related Weaknesses (CWE)
References
- https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7dPatch
- https://github.com/avo-hq/avo/pull/4330Issue TrackingPatch
- https://github.com/avo-hq/avo/releases/tag/v3.30.3ProductRelease Notes
- https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22jVendor Advisory
FAQ
What is CVE-2026-33209?
CVE-2026-33209 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2026-33209?
CVE-2026-33209 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33209?
Check the references section above for vendor advisories and patch information. Affected products include: Avohq Avo.