Solspace Freeform Plugin up to 5.10.13 Twig Renderer information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in Solspace Freeform Plugin up to 5.10.13. Affected is an unknown function of the component Twig Renderer. The manipulation results in information disclosure. This vulnerability is known as CVE-2026-73858. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Solspace Freeform Plugin up to 5.10.13. Affected is an unknown functionality of the component Twig Renderer. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-73858 since 08/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 5.10.14 eliminates this vulnerability.

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Productinfo

Vendor

• Solspace

Name

• Freeform Plugin

Version

• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13

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CPE 2.2info

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