Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck

CVE-2026-63169Omnispace Agora Project < 26.10.0 Stored XSS via Messenger Iframe

Medium 6.4

In plain English

A medium-severity cross-site scripting in Agora Project from Omnispace. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.3%top 78.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Omnispace Agora Project before 26.10.0 contains a stored cross-site scripting vulnerability that allows authenticated users to post messages containing attacker-controlled iframes through the messenger's HTMLPurifier SafeIframe branch. Attackers can craft a message with a malicious iframe that is stored and automatically rendered to other channel members, enabling zero-click drive-by downloads and framed JavaScript execution in recipients' browsers.

Affected products (as reported)

Vendor	Product	Versions
Omnispace	Agora Project	0 – before 26.10.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References

Fixed Release Tag release-notes, patch
Project Webpage product
VulnCheck Advisory: Omnispace Agora Project < 26.10.0 Stored XSS via Messenger Iframe third-party-advisory