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Vulnerability · Published Sep 23, 2026 · Assigned by GitHub_M

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

Medium 5.3

In plain English

A medium-severity security flaw in craft-freeform from solspace. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 53.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistsolspace/craft-freeform5.10.14GHSA-gxrg-x694-283w

Affected products (as reported)

VendorProductVersions
solspace craft-freeform >= 5.0.0, < 5.10.14

Weakness: CWE-1336 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References