# Broadcast Live Video – Live Streaming : WebRTC, HLS, RTSP, RTMP <= 7.3.14 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Attribute of videowhisper_channels Shortcode

- **ID:** WPSEC-2026-2621
- **Plugin:** Broadcast Live Video – Live Streaming : WebRTC, HLS, RTSP, RTMP (`videowhisper-live-streaming-integration`), https://wordpress.org/plugins/videowhisper-live-streaming-integration/
- **Affected versions:** all versions before 7.3.15
- **Fixed in:** 7.3.15 (Update to 7.3.15 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-11-05)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/videowhisper-live-streaming-integration
- **Fix released:** 2026-11-04
- **Published:** 2026-11-05
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2621/

## Description

The Broadcast Live Video – Live Streaming : WebRTC, HLS, RTSP, RTMP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute of the videowhisper_channels shortcode in all versions up to, and including, 7.3.14, due to insufficient input sanitization and output escaping. The attribute value is placed into JavaScript variable and function names inside an inline script, and esc_attr()/esc_js() do not stop JavaScript syntax in that position. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## References

- https://wpsec.com/vuln/WPSEC-2026-2621/
- https://plugins.svn.wordpress.org/videowhisper-live-streaming-integration/tags/7.3.15/
- https://wordpress.org/plugins/videowhisper-live-streaming-integration/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2621/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.