CVE-2026-34716
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
WWBN AVideo versions 26.0 and prior have an XSS vulnerability in the YPTSocket plugin. The caller feature passes the caller's display name directly as raw HTML into the jQuery Toast Plugin. An attacker can set their display name to an XSS payload, and upon initiating a call, the code executes in any online user's browser without interaction.
Risk Assessment
An attacker can execute arbitrary JavaScript in other users' browsers, potentially leading to session theft, data exfiltration, or further attacks.
Recommendation
Immediately disable the caller feature in the YPTSocket plugin until a patch is released and apply proper input sanitization.
Original NVD description (English source)
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo YPTSocket plugin's caller feature renders incoming call notifications using the jQuery Toast Plugin, passing the caller's display name directly as the heading parameter. The toast plugin constructs the heading as raw HTML ('<h2>' + heading + '</h2>') and inserts it into the DOM via jQuery's .html() method, which parses and executes any embedded HTML or script content. An attacker can set their display name to an XSS payload and trigger code execution on any online user's browser simply by initiating a call - no victim interaction is required beyond being connected to the WebSocket. At time of publication, there are no publicly available patches.