CVE-2025-67163

A stored cross-site scripting (XSS) vulnerability in Simple Machines Forum v2.1.6 allows...

6.1 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.25%Up 0.2 points since Dec 19, 2025

What each source reports

CVE List Score used 6.1

Record: CVE-2025-67163
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-20, CWE-79, CWE-83
Updated: 2026-11-02

EUVDEUVD-2025-204342 6.1

Record: EUVD-2025-204342
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fphf-479j-5c8x 6.1

A stored cross-site scripting (XSS) vulnerability in Simple Machines Forum v2.1.6 allows...

Record: GHSA-fphf-479j-5c8x
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

NVD 6.1

Record: CVE-2025-67163
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-20, CWE-79, CWE-83
Updated: 2026-11-02

OSV 6.1

Record: CVE-2025-67163
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

Affected products

simplemachines simple machines forum

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-67163 is a medium vulnerability (CVSS 6.1) in Simplemachines Simple Machines Forum, published December 18, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.