CVE-2026-35057

5.1 mediumEPSS 0.2%

Medium (5.1) in xenforo xenforo. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.1 medium

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

CVSS 3.1

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-04-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

xenforo:xenforo

References

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

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