High severity · published Aug 5, 2026
CVE-2026-16605
MultiVendorX < 5.0.11 - Store Owner+ Cross-Vendor Store Takeover and Deletion via Missing Authorization
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
The MultiVendorX WordPress plugin before 5.0.11 does not verify that the store targeted through its REST API belongs to the requesting vendor, allowing an authenticated vendor (Store Owner and above) to view, take over, permanently delete, or modify any other vendor's store on the marketplace.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
MultiVendorX ·
before 5.0.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16605
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16605
wpscan.com
https://wpscan.com/vulnerability/e31c9bf0-7340-4bd7-ad6e-6ad01737654a/
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7.1
CVE-2026-74926
MultiVendorX 5.0.0 - 5.0.15 - Subscriber+ Arbitrary Store Data and Ownership Overwrite via stores REST Endpoint
5.3
CVE-2026-74927
MultiVendorX 5.0.13 - 5.0.14 - Unauthenticated Vendor PII and Payout Data Disclosure via stores REST Endpoint
2.7
CVE-2026-16746
MultiVendorX < 5.0.11 - Store Owner+ Cross-Store Commission Data Disclosure via commissions REST Endpoint