WordPress Mega Menu <= 2.0.6 - Arbitrary File Creation
Priority MEDIUM 50CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
The WordPress Mega Menu plugin for WordPress is vulnerable to Arbitrary File Creation in versions up to, and including, 2.0.6 via the compiler_save AJAX action. This makes it possible for unauthenticated attackers to create arbitrary PHP files that can be used to execute malicious code.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00674 52nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| quadlayers | QuadMenu – Mega Menu | up to 2.0.6 | — | No fix listed | CNA |
- QuadMenu – Mega Menu Vendorquadlayers Affected up to 2.0.6 Fixed in — No fix listed CNA
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:quadlayers:wordpress_mega_menu-quadmenu:*:*:*:*:*:*:*:* | — | — | quadlayers |
- cpe:2.3:a:quadlayers:wordpress_mega_menu-quadmenu:*:*:*:*:*:*:*:* Versions — — ·quadlayers
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4443
- 2026-10-03 Alias added: GHSA-9crh-8h3q-mwwr
References
More quadlayers vulnerabilities
- TI-2023-25819 WordPress WooCommerce Checkout Manager plugin <= 7.3.0 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2019-11850 The insta-gallery plugin before 2.4.8 for WordPress has no nonce validation for… CVSS 3.0HIGH 8.8
- TI-2025-36354 WordPress Perfect Brands for WooCommerce plugin <= 3.6.2 - SQL Injection vulnerability CVSS 3.1HIGH 8.5
- TI-2026-74596 WooCommerce Checkout Field Manager: Missing Authorization Allows Media Deletion CVSS 3.1HIGH 8.1
- TI-2024-26564 WordPress Social Feed Gallery plugin <= 4.3.9 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2022-07945 WordPress Perfect Brands for WooCommerce plugin <= 2.0.4 - Server Information Exposure vulnerability CVSS 3.1HIGH 7.5
Sources
- CVE-2021-4443 · CVE Program
- CVE-2021-4443 · NVD
- FIRST EPSS
- GHSA-9crh-8h3q-mwwr · GitHub Advisory Database · CC BY 4.0
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