CVE-2026-35057 — MEDIUM (6.4)

Q: How severe is CVE-2026-35057?

CVE-2026-35057 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-35057?

Check the references section above for vendor advisories and patch information. Affected products include: Xenforo Xenforo.

Vulnerability 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 Score

6.4

MEDIUM

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

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Xenforo	Xenforo	< 2.2.19

Related Weaknesses (CWE)

CWE-79

References

https://github.com/methosiea/xenforo-2-xssExploitThird Party Advisory
https://xenforo.com/community/threads/xenforo-2-3-10-add-ons-and-2-2-19-releasedRelease Notes

FAQ

What is CVE-2026-35057?

CVE-2026-35057 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 maliciou...

How severe is CVE-2026-35057?

CVE-2026-35057 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-35057?

Check the references section above for vendor advisories and patch information. Affected products include: Xenforo Xenforo.