CVE-2026-33209: Avo has a XSS vulnerability on `return_to` param
(updated )
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.
References
- github.com/advisories/GHSA-762r-27w2-q22j
- github.com/avo-hq/avo
- github.com/avo-hq/avo/commit/4453d39ddc6309f3bc8ada73ef21e1971112de7d
- github.com/avo-hq/avo/pull/4330
- github.com/avo-hq/avo/releases/tag/v3.30.3
- github.com/avo-hq/avo/security/advisories/GHSA-762r-27w2-q22j
- github.com/rubysec/ruby-advisory-db/blob/master/gems/avo/CVE-2026-33209.yml
- nvd.nist.gov/vuln/detail/CVE-2026-33209
Code Behaviors & Features
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