CVE-2026-63171

CVSS 5.4 (medium) · published 2026-10-13

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.

Weakness: CWE-79

Source: NVD CVE-2026-63171

References

• https://github.com/xech/agora-project/releases/tag/26.10
• https://www.agora-project.net/
• https://www.akailabs.fr/blog/multiple-vulnerabilities-in-agora-project-26-5-2#cve-2026-63171-stored-xss-via-category-description
• https://www.vulncheck.com/advisories/omnispace-agora-project-stored-xss-via-category-description

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