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  4. CVE 2026 66583 wordpress forminator plugin 1570 php object
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Back to active CVEs
Critical · CVSS 9.8CVE-2026-66583

WordPress Forminator plugin <= 1.57.0 - PHP Object Injection vulnerabilityCVE-2026-66583

Answer in brief

CVE-2026-66583 records a Critical severity (CVSS 9.8) vulnerability in WordPress Forminator plugin <= 1.57.0 - PHP Object Injection vulnerability. The current sources do not mark it as known exploited. The current feed maps WPMU DEV/forminator (generic), WPMU DEV/Forminator (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 20, 2026Updated Aug 20, 2026Source checked Oct 4, 2026First seen by HOL Aug 20, 2026Material review Aug 20, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps WPMU DEV/forminator (generic), WPMU DEV/Forminator (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
WPMU DEV/forminatorgeneric>=n/a <=1.57.0Not reported
WPMU DEV/Forminatorgenericn/aNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for WPMU DEV/forminator, WPMU DEV/Forminator.
  2. 2Review the reported fix. Source-reported solution: Update the WordPress Forminator Plugin to the latest available version (at least 1.57.1).

Evidence timeline and material changes

  1. Published upstream

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 20, 2026

Sources and claim methodology

  • Source referencepatchstack.com
Upstream source description

Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress TranslatePress plugin <= 3.3.6 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • WordPress Unlimited Elements For Elementor (Free Widgets, Addons, Templates) plugin <= 2.0.20 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • WordPress Gutenberg Blocks by Kadence Blocks plugin <= 3.7.11.1 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • WordPress Unlimited Elements For Elementor (Free Widgets, Addons, Templates) plugin <= 2.0.20 - SQL Injection vulnerabilitySame generic ecosystem
  • Razorpay for WooCommerce < 4.8.8 - Unauthenticated Order Shipping Modification via IDORSame generic ecosystem
  • Simple Shopping Cart < 5.2.6 - Admin+ Stored XSS via PayPal API CredentialsSame generic ecosystem

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-502
Source
CVE List V5
Source checked
Oct 4, 2026
References
1 linked source
Open source record