BaseFortify

Publication date: 2025-12-18

Last updated on: 2025-12-19

Assigner: MITRE

Description

A stored cross-site scripting (XSS) vulnerability in Simple Machines Forum v2.1.6 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Forum Name parameter.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-18

Last Modified

2025-12-19

Generated

2026-07-06

AI Q&A

2025-12-18

EPSS Evaluated

2026-07-05

NVD

CVE-2025-67163

EUVD

EUVD-2025-204342

Affected Vendors & Products

Vendor	Product	Version / Range
simple_machines	forum	2.1.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-83	The product does not neutralize or incorrectly neutralizes "javascript:" or other URIs from dangerous attributes within tags, such as onmouseover, onload, onerror, or style.

Attack-Flow Graph

Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue in Simple Machines Forum version 2.1.6. It allows attackers to inject malicious web scripts or HTML by inserting a crafted payload into the Forum Name parameter. When other users view the affected forum, the malicious script executes in their browsers.

Impact Analysis

The vulnerability can allow attackers to execute arbitrary scripts in the context of the forum website, potentially leading to session hijacking, defacement, theft of user credentials, or other malicious actions affecting users of the forum.

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