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

Source: https://junglewise.ai/threats/cve-2026-61573-avideo-is-a-video-sharing-platform-prior-to-8-1-0-the-anonymous  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/avideo). Vendors: [WWBN](https://junglewise.ai/threats/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

- [https://github.com/WWBN/AVideo-Encoder/commit/789d75681cc9377e1cc8950ffcc0cfc9b2032b9e](https://github.com/WWBN/AVideo-Encoder/commit/789d75681cc9377e1cc8950ffcc0cfc9b2032b9e)
- [https://github.com/WWBN/AVideo-Encoder/releases/tag/v8.1.0](https://github.com/WWBN/AVideo-Encoder/releases/tag/v8.1.0)

## Related threats

- [WWBN AVideo stored cross-site scripting in channel feed](https://junglewise.ai/threats/cve-2026-126810-wwbn-avideo-29-1-0-through-29-7-1-contains-a-stored-cross-site)
- [WWBN AVideo missing authorization in import and file operations](https://junglewise.ai/threats/cve-2026-126809-wwbn-avideo-through-29-7-1-contains-a-missing-authorization)
- [WWBN AVideo stored cross-site scripting in video download link](https://junglewise.ai/threats/cve-2026-126806-wwbn-avideo-14-3-through-29-7-1-contains-a-stored-cross-site)
- [WWBN AVideo incorrect authorization in encoder endpoints](https://junglewise.ai/threats/cve-2026-126805-wwbn-avideo-through-29-7-1-contains-an-incorrect-authorization)
- [WWBN AVideo path traversal in ADs plugin deleteImage.json.php](https://junglewise.ai/threats/cve-2026-126804-wwbn-avideo-12-4-through-29-7-1-contains-a-path-traversal)