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CVE-2024-12427

Multi Step Form <= 1.7.23 - Missing Authorization to Unauthenticated Limited File Upload

MEDIUM
5.3
CVSS Score
Published: January 16, 2025 at 09:39 AM UTC
Updated: June 17, 2026 at 06:59 AM UTC
2 products affected across 2 vendorsMulti Step FormMulti Step Form

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The Multi Step Form plugin for WordPress is vulnerable to unauthorized limited file upload due to a missing capability check on the fw_upload_file AJAX action in all versions up to, and including, 1.7.23. This makes it possible for unauthenticated attackers to upload limited file types such as images.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Multi Step Form· Mondulawordpress-plugin
95%
v < 1.7.24
Affected range stops below 1.7.24, so it looks safe — our inference, not a vendor statement
Multi Step Form· MONDULA2016wordpress-plugin
60%
v ≤ 1.7.23

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Product
Source: [email protected]
https://plugins.trac.wordpress.org/browser/multi-step-form/tags/1.7.22/includes/lib/msf-shortcode.class.php#L100
Product
Source: [email protected]
https://plugins.trac.wordpress.org/browser/multi-step-form/tags/1.7.22/includes/lib/msf-shortcode.class.php#L30
Patch
Source: [email protected]
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3219723%40multi-step-form&new=3219723%40multi-step-form&sfp_email=&sfph_mail=
Third Party Advisory
Source: [email protected]
https://www.wordfence.com/threat-intel/vulnerabilities/id/f0a31fee-ccc2-4c3b-b198-6cb750188113?source=cve

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMWordfence
Vector?

Quick Info

StatusANALYZED
CWE
CWE-862

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