VulnerabilityAnalyzed
CVE-2026-33209
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.
MEDIUM 5.3EPSS 0.26%
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
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 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- avohq/avo
- Source
- security-advisories@github.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.