CVE-2026-33209
MEDIUMAvo <3.30.3 return_to Parameter - Reflected Cross-Site Scripting
Title source: manualDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22j
X_Refsource_Misc x_refsource_misc
https://github.com/avo-hq/avo/pull/4330
X_Refsource_Misc x_refsource_misc
https://github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7d
X_Refsource_Misc x_refsource_misc
https://github.com/avo-hq/avo/releases/tag/v3.30.3
Scores
CVSS v3
6.1
EPSS
0.0026
EPSS Percentile
17.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (3)
avo-hq/avo
< 3.30.3
avohq/avo
< 3.30.3
rubygems/avo
0 - 3.30.3RubyGems
Published
Mar 20, 2026
Tracked Since
Mar 21, 2026