What’s Vulnerable › Vulnerabilities

CVE-2026-63156: Omnispace Agora Project < 26.10.0 Reflected XSS via visioUrl Parameter

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-27
• Weakness: CWE-79

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.

Affected products

• Omnispace Agora Project: before 26.10.0 — fixed in 26.10.0

How to fix

Upgrade to a fixed version: Omnispace Agora Project 26.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/xech/agora-project/releases/tag/26.10
• https://www.agora-project.net/
• https://www.vulncheck.com/advisories/omnispace-agora-project-reflected-xss-via-visiourl-parameter

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