CVE-2026-63171

MEDIUM 5.4

Omnispace Agora Project < 26.10.0 Stored XSS via Category Description

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	omnispace
Product	agora project
Published	Oct 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Omnispace / Agora Project

0 < 26.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/xech/agora-project/releases/tag/26.10 agora-project.net: https://www.agora-project.net/ vulncheck.com: https://www.vulncheck.com/advisories/omnispace-agora-project-stored-xss-via-category-description

Credits

Geoffrey Robert of akailabs