CVE-2026-61573: AVideo reflected XSS in login interface via unencoded URL and form parameters

CVE-2026-61573 · Severity: medium · CVSS 6.1 · Published 2026-10-28

AVideo is a video-sharing platform used by content creators and operators to manage and stream video content. An unauthenticated attacker can trick an operator into clicking a malicious link that executes arbitrary JavaScript in their browser, allowing the attacker to steal their login credentials, session tokens, and perform unauthorized actions on the platform.

Technologies: WWBN AVideo. Vendors: WWBN.

Quick answers

Is CVE-2026-61573 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-61573 being exploited in the wild.
How severe is CVE-2026-61573?
Medium severity, with a CVSS score of 6.1, published 28 October 2026.
Which products and versions are affected?
WWBN AVideo before 8.1.0.
Is there a fix for CVE-2026-61573?
Yes: fixed in 8.1.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-61573 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-61573?
Check whether you run WWBN AVideo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 8.1.0

Technical details

Multiple reflected cross-site scripting (XSS) vulnerabilities exist in the anonymous login interface due to insufficient output encoding. The `webSiteRootURL` parameter is reflected verbatim into HTML attributes and JavaScript strings without escaping; the `user` and `pass` parameters are filtered only for single quotes, leaving double quotes and angle brackets; and POST parameters including `lang` are reflected via `json_encode` without `JSON_HEX_TAG`, allowing closing script tags to break out. An unauthenticated attacker can craft a malicious login URL that executes arbitrary JavaScript in the operator's browser within the same origin, gaining access to session identifiers and other sensitive data.

Affected products

  • WWBN AVideo before 8.1.0

Timeline

  • 2026-10-28: disclosed

References

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