Medium severity6.1NVD Advisory· Published Apr 1, 2026· Updated Apr 1, 2026

CVE-2026-35055

Description

XenForo before 2.3.9 and before 2.2.18 is vulnerable to cross-site scripting (XSS) related to lightbox usage in posts. An attacker can inject malicious scripts that execute when users interact with post content displayed in the lightbox.

Affected products

Xenforo/Xenforo
cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:*
Range: <2.2.18

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.vulncheck.com/advisories/xenforo-cross-site-scripting-via-lightbox-in-postsnvdThird Party Advisory
xenforo.com/community/threads/xenforo-2-3-9-inc-xfmg-2-2-18-released-security-fix.235659/nvdRelease Notes

News mentions

No linked articles in our index yet.

cvss	0.397
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000