CVE-2026-63169: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Omnispace Agora Project
Description
Omnispace Agora Project versions before 26.10.0 contain a stored cross-site scripting (XSS) vulnerability. Authenticated users can post messages with attacker-controlled iframes via the messenger's HTMLPurifier SafeIframe branch. These malicious iframes are stored and rendered automatically to other channel members, potentially enabling zero-click drive-by downloads and execution of framed JavaScript in recipients' browsers.
CVSS v4.0
Score 5.3medium
Affected software
Omnispace
Agora Project
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-63169 is a stored cross-site scripting vulnerability in Omnispace Agora Project prior to version 26.10.0. The flaw arises from improper neutralization of input during web page generation, specifically allowing authenticated users to embed malicious iframes in messages through the HTMLPurifier SafeIframe branch. These iframes are stored and rendered to other users in the same channel, enabling execution of attacker-controlled JavaScript and potential drive-by download attacks without user interaction.
Potential Impact
The vulnerability allows authenticated users to inject malicious iframes into messages that are stored and automatically rendered to other channel members. This can lead to execution of arbitrary JavaScript in the browsers of recipients, enabling zero-click drive-by downloads and other client-side attacks. The impact is limited to authenticated users posting messages but affects all users receiving those messages.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict or monitor message posting privileges and consider disabling rendering of iframes in messages if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-07-15T21:18:20.186Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace95df2cdf04f656aad857
Added to database: 10/13/2026, 20:34:39 UTC
Last enriched: 10/13/2026, 20:49:32 UTC
Last updated: 10/13/2026, 20:50:23 UTC
Views: 2
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