CVE-2026-35057

EUVD-2026-17745
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
VulnCheckCNA
6.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
xenforoxenforo
𝑥
< 2.2.19
xenforoxenforo
2.3.0 ≤
𝑥
< 2.3.10
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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/