Summary
Solspace Freeform: Limited Twig template injection via submitted field values
Impact
An unauthenticated attacker with access to a public Freeform form could cause limited Twig expressions to be evaluated server-side.
Confirmed impact includes:
PHP version disclosure
Operating system/platform disclosure
Absolute filesystem path disclosure
Potential form rendering errors from malformed Twig input
This could assist with environment fingerprinting or be used in combination with other vulnerabilities. However, no credential disclosure, Craft application access, arbitrary file read, or remote code execution was confirmed.
CVE-2026-73858 has a CVSS score of 5.3 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (5.10.14); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Already deployed Kodem?
See it in your environmentNew to Kodem? Get a demo →Remediation advice
Freeform should treat submitted field values as plain user input and should not evaluate them as Twig. Twig rendering should be limited to trusted/admin-authored templates and configuration values.
This issue has been resolved by preventing submitted field values from being rendered as Twig in the affected context.
Frequently Asked Questions
- What is CVE-2026-73858? CVE-2026-73858 is a medium-severity security vulnerability in solspace/craft-freeform (composer), affecting versions >= 5.0.0, <= 5.10.13. It is fixed in 5.10.14.
- How severe is CVE-2026-73858? CVE-2026-73858 has a CVSS score of 5.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of solspace/craft-freeform are affected by CVE-2026-73858? solspace/craft-freeform (composer) versions >= 5.0.0, <= 5.10.13 is affected.
- Is there a fix for CVE-2026-73858? Yes. CVE-2026-73858 is fixed in 5.10.14. Upgrade to this version or later.
- Is CVE-2026-73858 exploitable, and should I be worried? Whether CVE-2026-73858 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-73858 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-73858? Upgrade
solspace/craft-freeformto 5.10.14 or later.