WordPress MultiVendorX plugin <= 5.0.20 - Broken Access Control vulnerability
Priority LOW 34CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Missing Authorization vulnerability in MultiVendorX MultiVendorX dc-woocommerce-multi-vendor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MultiVendorX: from n/a through 5.0.20.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00266 18th 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
- Partial
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 |
|---|---|---|---|---|---|
| MultiVendorX | MultiVendorX | up to 5.0.20 | — | No fix listed | CNA |
- MultiVendorX VendorMultiVendorX Affected up to 5.0.20 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66651
- 2026-10-03 Alias added: GHSA-fx55-rw83-58r5
- 2026-10-13 Title updated · CNA
- 2026-10-13 Affected versions changed · CNA
More MultiVendorX vulnerabilities
- TI-2023-28013 WordPress MultiVendorX plugin <= 4.0.23 - Broken Access Control vulnerability CVSS 3.1HIGH 8.2
- TI-2026-70675 MultiVendorX Incorrect Authorization via Settings REST Endpoint CVSS 4.0HIGH 7.1
- TI-2025-00410 Path traversal in MultiVendorX – WooCommerce Multivendor Marketplace Solutions CVSS 3.1CRITICAL 9.8
- TI-2024-07685 Missing authorization in MultiVendorX – WooCommerce Multivendor Marketplace Solutions CVSS 3.1CRITICAL 9.8
- TI-2025-31831 WordPress MultiVendorX plugin <= 4.2.23 - Broken Access Control vulnerability CVSS 3.1HIGH 8.6
- TI-2024-16234 WordPress MultiVendorX plugin <= 4.0.25 - Broken Access Control vulnerability CVSS 3.1HIGH 8.6
Sources
- CVE-2026-66651 · CVE Program
- CVE-2026-66651 · NVD
- FIRST EPSS
- GHSA-fx55-rw83-58r5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences