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CVE-2026-73858— Solspace Freeform: Limited Twig template injection via submitted field values

Quick assessment

Affected
solspace craft-freeform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Solspace Freeform plugin for Craft CMS 5.x is a super flexible form-building tool. From 5.0.0 through 5.10.13, submitted values from public Freeform forms can be evaluated by the isolated Twig renderer when rendered into HTML attributes. An unauthenticated att

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-73858

Vulnerability Information

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Vulnerability Title
Solspace Freeform: Limited Twig template injection via submitted field values
Source: CVE Program / CVE List V5
Vulnerability Description
Solspace Freeform plugin for Craft CMS 5.x is a super flexible form-building tool. From 5.0.0 through 5.10.13, submitted values from public Freeform forms can be evaluated by the isolated Twig renderer when rendered into HTML attributes. An unauthenticated attacker can place Twig expressions in submitted field values, including value attributes, and receive evaluated PHP, operating-system, or Craft filesystem-path constants in the form response. The isolated context was not shown to expose Craft globals, environment variables, credentials, arbitrary files, or code execution, so the confirmed impact is limited server and environment information disclosure and possible rendering errors. This issue is fixed in version 5.10.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
solspace craft-freeform >= 5.0.0, < 5.10.14 -

II. Public POCs for CVE-2026-73858

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III. Intelligence Information for CVE-2026-73858

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Patches & Fixes for CVE-2026-73858 (2)

Other References for CVE-2026-73858 (2)

IV. Related Vulnerabilities

Same product: craft-freeform
Same vendor: solspace
Same weakness: CWE-1336

V. Comments for CVE-2026-73858

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