CVE-2026-18324Network attack vector

Stored script execution via unsanitized rich-text submissions

Published Aug 28, 2026 · Updated Aug 28, 2026

Stored XSS in WPMU DEV Forminator 1.57.0.1 and earlier allows remote attackers to execute scripts through rich-text textarea submissions. The Rich-Text Textarea field stores submitted HTML without sufficient input sanitization and later renders it without adequate output escaping. A publicly reachable form must use the Rich-Text editor option, and the stored script runs when a user views the injected page.

CVSS severity7.2
High
EPSS probability0.30%
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 1.57.0.1 and earlier allows remote attackers to execute scripts through rich-text textarea submissions. The Rich-Text Textarea field stores submitted HTML without sufficient input sanitization and later renders it without adequate output escaping. A publicly reachable form must use the Rich-Text editor option, and the stored script runs when a user views the injected page.

The record

CVE
CVE-2026-18324
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
WPMU DEV
Product
Forminator
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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 <=1.57.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Forminatorversion=0 <=1.57.0.1

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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