Omnispace Agora Project before 26.10.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious script by submitting a crafted forum category description containing a double-quote character that breaks out of an HTML input value attribute. Attackers can exploit the HTMLPurifier configuration that preserves double-quotes to escape the attribute context and execute arbitrary script in the browser of users viewing the forum category.
Advisories

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Fixes

Solution

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Workaround

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History

Sat, 17 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Omnispace
Omnispace agora Project
Vendors & Products Omnispace
Omnispace agora Project

Tue, 13 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Description Omnispace Agora Project before 26.10.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious script by submitting a crafted forum category description containing a double-quote character that breaks out of an HTML input value attribute. Attackers can exploit the HTMLPurifier configuration that preserves double-quotes to escape the attribute context and execute arbitrary script in the browser of users viewing the forum category.
Title Omnispace Agora Project < 26.10.0 Stored XSS via Category Description
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T16:52:42.650Z

Reserved: 2026-07-15T21:18:20.186Z

Link: CVE-2026-63171

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-13T21:17:41.027

Modified: 2026-10-15T15:12:54.040

Link: CVE-2026-63171

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T21:30:06Z

Weaknesses