Improper Neutralization of Special Elements Used in a Template Engine Affecting verbb/formie package, versions <2.2.20>=3.0.0-beta.1, <3.1.24
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-VERBBFORMIE-16757861
- published19 May 2026
- disclosed18 May 2026
- creditpwnsauc3
Introduced: 18 May 2026
CVE-2026-45697 (opens in a new tab)How to fix?
Upgrade verbb/formie to version 2.2.20, 3.1.24 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via the submission handling process for Hidden fields with the Default value set to Custom. An attacker can execute arbitrary server-side code by submitting crafted values that are evaluated as templates. This is only exploitable if a public form contains at least one Hidden field configured with Default value set to Custom.
Workaround
This vulnerability can be mitigated by temporarily removing Hidden fields from public forms or switching the Hidden field default away from Custom.