Stored Cross-Site Scripting Vulnerability in Omnispace Agora Project
CVE-2026-63169

5.3MEDIUM

Key Information:

Vendor

Omnispace

Status
Agora Project
Vendor
CVE Published:
13 October 2026

What is CVE-2026-63169?

The Omnispace Agora Project contains a stored cross-site scripting vulnerability in versions prior to 26.10.0. This flaw allows authenticated users to embed malicious iframes within messages posted through the messenger feature, using the HTMLPurifier SafeIframe branch. As a result, attackers can craft these messages, which get stored and subsequently rendered in other users' browsers. This enables potential zero-click drive-by downloads and unauthorized execution of JavaScript, posing significant risks to user security.

Affected Version(s)

Agora Project 0 < 26.10.0

References

https://github.com/xech/agora-project/releases/tag/26.10
release-notespatch
https://www.agora-project.net/
product
https://www.vulncheck.com/advisories/omnispace-agora-proj...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Geoffrey Robert of akailabs
.