How severe is CVE-2026-26188?

CVE-2026-26188 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-26188 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26188?

CVE-2026-26188 affects Solspace Freeform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26188?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-26188 have an EU (EUVD) identifier?

Yes. CVE-2026-26188 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6168.

When was CVE-2026-26188 published?

CVE-2026-26188 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2026-26188

CVE-2026-26188 is a medium-severity vulnerability in Solspace Freeform with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6168
Weakness: CWE-79
Affected product: Solspace Freeform
Published: 2026-02-12
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2026-26188?: CVE-2026-26188 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-26188 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26188?: CVE-2026-26188 affects Solspace Freeform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26188?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26188 have an EU (EUVD) identifier?: Yes. CVE-2026-26188 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6168.
When was CVE-2026-26188 published?: CVE-2026-26188 was published on 2026-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:solspace:freeform:*:*:*:*:*:craft_cms:*:*

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