CVE-2026-35057

MEDIUM 6.4

XenForo Stored Cross-Site Scripting via Structured Text Mentions

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

XenForo before 2.3.10 and before 2.2.19 is vulnerable to stored cross-site scripting (XSS) in structured text mentions, primarily affecting legacy profile post content. An attacker can inject malicious scripts through crafted mentions that are stored and executed when other users view the content.

CWE	CWE-79
Vendor	xenforo
Product	xenforo
Published	Apr 1, 2026
Last Updated	Apr 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

None

Affected Versions

XenForo / XenForo

2.3.0 < 2.3.10 0 < 2.2.19

References

NVD ↗ CVE.org ↗ EPSS Data ↗

xenforo.com: https://xenforo.com/community/threads/xenforo-2-3-10-add-ons-and-2-2-19-released-includes-security-fix.236249/ github.com: https://github.com/methosiea/xenforo-2-xss

Credits

metho