CVE-2026-63156

Medium

Description

Omnispace Agora Project before 26.10.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious HTML attributes by manipulating the visioUrl parameter, which was not routed through the URL-sanitizing branch of the parameter filter and was urldecoded after filtering. Attackers can craft a malicious URL containing the visioUrl parameter with an attribute breakout payload to execute arbitrary JavaScript in the victim's browser pre-authentication, with the issue fixed in version 26.10.0 via changes to app/Common/Req.php.

SeverityMedium
CVSS6.1
Exploit probability—
ProductAgora Project
PublishedOct 13, 2026
First seenOct 13, 2026

How to fix

Update
  • Omnispace Agora Project26.10.0 or later

Affected products

ProductAffected versionsFixed in
Omnispace Agora Projectv < 26.10.026.10.0

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