What is CVE-2026-26188?

CVE-2026-26188 is a medium-severity vulnerability in Solspace Craft-freeform, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-12.

How severe is CVE-2026-26188?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Solspace Craft-freeform

CVE-2026-26188

Solspace Freeform plugin for Craft CMS 5.x is a super flexible form-building tool. An authenticated, low-privilege user (able to create/edit forms) can inject arbitrary HTML/JS into the Craft Control Panel (CP) builder and integrations vie…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (16.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Solspace Craft-freeform — versions >= 5.0.0, < 5.14.7
Solspace Freeform

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-26188?: CVE-2026-26188 is a medium-severity vulnerability in Solspace Craft-freeform, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-12.
How severe is CVE-2026-26188?: Medium severity. CVSS v3 base score is 5.4 out of 10.