CVE-2025-67163Public exploitNetwork attack vector

Stored XSS via unescaped Forum Name rendering

Published Dec 18, 2025 · Updated Dec 18, 2025

Stored XSS in Simple Machines Forum 2.1.6 allows remote authenticated users to run scripts in visitors' browsers through Forum Name. Stats.template.php inserts the stored Forum Name into the statistics page title without neutralizing executable HTML or JavaScript. Administrative permission is required to save the payload; it executes for authenticated or anonymous visitors who open /index.php?action=stats, enabling actions in a victim's forum session or data disclosure.

CVSS severity6.1
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Simple Machines Forum 2.1.6 allows remote authenticated users to run scripts in visitors' browsers through Forum Name. Stats.template.php inserts the stored Forum Name into the statistics page title without neutralizing executable HTML or JavaScript. Administrative permission is required to save the payload; it executes for authenticated or anonymous visitors who open /index.php?action=stats, enabling actions in a victim's forum session or data disclosure.

The record

CVE
CVE-2025-67163
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-83, CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-83Improper Neutralization of Script in Attributes in a Web Page
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo