CVE-2026-35057

MEDIUM EPSS 6.1%

Published Apr 1, 20263mo ago · Modified Jun 17, 20262w ago

5.1 CVSS 4.0

Medium

Published Apr 1, 2026 3mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

5.1

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction P

Scope X

Threat Intelligence

EPSS Exploit Probability

6.1% percentile

Exploit & Patch Status

Public Exploit Known

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 2

Vendor	Product	Version	Range
xenforo	xenforo	*	<2.2.19
xenforo	xenforo	*	≥2.3.0 – <2.3.10

References 2

github.com https://github.com/methosiea/xenforo-2-xss

ExploitThird Party Advisory
xenforo.com https://xenforo.com/community/threads/xenforo-2-3-10-add-ons-and-2-2-19-released-includes-security-fix.236249/

Release Notes

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.