What is the CVSS score of CVE-2026-26188?

CVE-2026-26188 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Freeform are affected by CVE-2026-26188?

Organizations using Solspace Freeform should be aware of moderate risk from CVE-2026-26188, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

Is there a public PoC exploit available for CVE-2026-26188?

Yes, a public proof-of-concept exploit is available for CVE-2026-26188. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26188?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Freeform CVE-2026-26188

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-12 security-advisories@github.com

GHSA-jp3q-wwp3-pwv9

XSS Freeform

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 20, 2026 - 21:08 vuln.today

Public exploit code

Patch released

Feb 20, 2026 - 21:08 nvd

Patch available

CVE Published

Feb 12, 2026 - 23:16 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

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 views. User-controlled form labels and integration metadata are rendered with dangerouslySetInnerHTML without sanitization, leading to stored XSS that executes when any admin views the builder/integration screens. This vulnerability is fixed in 5.14.7.

AnalysisAI

Stored XSS in Solspace Freeform for Craft CMS 5.x allows authenticated users with form creation privileges to inject malicious JavaScript into form labels and integration metadata, which executes in the Control Panel when administrators view the builder or integrations. Public exploit code exists for this vulnerability. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 5.4 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker (requires authentication) could exploit this flaw, stored XSS that executes when any admin views the builder/in.
Remediation	A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-26188 vulnerability details – vuln.today

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