CVE-2026-45697: Formie: Pre-authenticated server-side template injection in Hidden fields

critical Affects verbb/formie. Feed 2026.10.29.4, updated 2026-10-29; published 2026-05-18; advisory modified 2026-09-10.

Formie: Pre-authenticated server-side template injection in Hidden fields

Package: verbb/formie Composer
Affected versions: >=3.0.0-beta.1 and <3.1.24 or <2.2.20
Fixed in: 3.1.24, 2.2.20
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 0% (41.0th percentile)
Published: 2026-05-18
Source: osv.dev

References

CWE-1336 CWE-693 CWE-94

NVD record verbb/formie advisories

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CVE-2026-52889 critical Formie Hidden field defaults vulnerable to Server-Side Template Injection same package: verbb/formie
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CVE-2026-76089 high Formie: Missing authorization on sent notification resend modal exposes submission PII same package: verbb/formie
CVE-2026-76087 high Formie: Unauthenticated users can overwrite incomplete submissions via submit action same package: verbb/formie
CVE-2026-47266 high formie's unauthenticated front-end submission editing can overwrite existing submissions same package: verbb/formie
CVE-2024-35191 medium verbb/formie Server-Side Template Injection for variable-enabled settings same package: verbb/formie