CVE-2026-15748
Forminator Forms <= 1.56.1 - Unauthenticated Arbitrary File Upload via Forged Upload Field Configuration
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 3 proofs of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: total
Summary
The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder
through 1.56.1
References 10
plugins.trac.wordpress.org
- browser/forminator/tags/1.55.1/library/fields/upload.php#L552
- browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L2767
- browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L738
- browser/forminator/tags/1.55.1/library/helpers/helper-fields.php#L3425
- browser/forminator/tags/1.55.1/library/abstracts/abstract-class-field.php#L2308
- browser/forminator/tags/1.55.1/admin/classes/class-admin-ajax.php#L1196