CVE-2025-5341Network attack vector

Stored XSS via unescaped form field attributes

Published Jun 5, 2025 · Updated Apr 8, 2026

Stored XSS in WPMU DEV Forminator 1.44.1 and earlier allows remote authenticated users to inject scripts through form field attributes. The front-end renderer in forminator-form.js inserts stored id and data-size values into DOM attributes without sanitizing and escaping them. Contributor-level access is sufficient, and the injected script runs in the browser of any user who opens the affected page, enabling actions in that user's session.

CVSS severity6.4
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in WPMU DEV Forminator 1.44.1 and earlier allows remote authenticated users to inject scripts through form field attributes. The front-end renderer in forminator-form.js inserts stored id and data-size values into DOM attributes without sanitizing and escaping them. Contributor-level access is sufficient, and the injected script runs in the browser of any user who opens the affected page, enabling actions in that user's session.

The record

CVE
CVE-2025-5341
Published
Jun 5, 2025
Updated
Apr 8, 2026
Vendor
WPMU DEV
Product
Forminator
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.44.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPMU DEV · Forminatorversion=0 <=1.44.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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