CVE-2026-33209

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 v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7d	Patch
https://github.com/avo-hq/avo/pull/4330	Issue Tracking Patch
https://github.com/avo-hq/avo/releases/tag/v3.30.3	Product Release Notes
https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22j	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:avohq:avo:*:*:*:*:*:ruby:*:*

History

23 Mar 2026, 18:55

Type	Values Removed	Values Added
References	~~() https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7d -~~	() https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7d - Patch
References	~~() https://github.com/avo-hq/avo/pull/4330 -~~	() https://github.com/avo-hq/avo/pull/4330 - Issue Tracking, Patch
References	~~() https://github.com/avo-hq/avo/releases/tag/v3.30.3 -~~	() https://github.com/avo-hq/avo/releases/tag/v3.30.3 - Product, Release Notes
References	~~() https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22j -~~	() https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22j - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
First Time		Avohq avo Avohq
CPE		cpe:2.3:a:avohq:avo::::::ruby::*

20 Mar 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-20 23:16

Updated : 2026-03-23 18:55

NVD link : CVE-2026-33209

Mitre link : CVE-2026-33209

CVE.ORG link : CVE-2026-33209

JSON object : View

Products Affected

avohq

avo

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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