CVE-2025-67163

low-risk

Published 2025-12-18

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.

Do I need to act?

0.09% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.1/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Simple Machines Forum

Affected Vendors

Simplemachines

References (5)

Product https://github.com/SimpleMachines/SMF

Product https://github.com/SimpleMachines/SMF/blob/release-3.0/Themes/default/Stats.temp...

Broken Link https://github.com/SimpleMachines/SMF/security/advisories/GHSA-p2xm-x9fp-5r7x

Third Party Advisory https://github.com/mbiesiad/vulnerability-research/tree/main/CVE-2025-67163

Product https://wiki.simplemachines.org/smf/Installing

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low-risk

Severity 23/34 · High

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal