🛡️ CVE-2026-33209 — avo
Description
Avo has a XSS vulnerability on return_to param
Description
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.
Impact
This vulnerability may allow execution of arbitrary JavaScript in the context of the application.
Impact varies depending on deployment:
- In unauthenticated setups: exploitable via crafted links sent to users
- In authenticated setups: limited to authenticated users and requires interaction
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. Rated impact: confidentiality none, integrity none, availability none.
Weakness class
CVE-2026-33209 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.
Affected software
CVE-2026-33209 is recorded against 1 package.
- avo (fixed in 3.30.3)
Timeline and source
Published on 18 March 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.
References
github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
github.com (Web)
Details
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| avo | — | 3.30.3 |
References
Similar Threats
- Unknown CVE-2026-53769
- Critical CVE-2026-55518
- High CVE-2026-42205
- Unknown MAL-2025-153461
- Unknown MAL-2025-153462
More CVE 2026 advisories
Browse all of CVE 2026 in the advisory index.
Vulnerability Monitoring
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