Vulnerability · Published Oct 11, 2026 · Assigned by VulnCheck

CVE-2026-108695MultiVendorX through 5.0.19 Incorrect Authorization via Settings REST Endpoint

High 7.1

In plain English

A high-severity incorrect authorization in MultiVendorX from multivendorx. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.3%top 74.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

MultiVendorX WordPress plugin through 5.0.19 contains an incorrect authorization vulnerability that allows vendor accounts to modify marketplace-wide settings via the settings REST endpoint. Attackers with the store_owner role can send POST requests to /wp-json/multivendorx/v1/settings, gated only by edit_stores, to overwrite commission, payout, and onboarding settings.

Affected products (as reported)

Vendor	Product	Versions
multivendorx	MultiVendorX	0 – through 5.0.19

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

References

GitHub Issue #2375 issue-tracking
https://github.com/multivendorx/multivendorx product
https://github.com/multivendorx/multivendorx/blob/8a717799b02f698e4b2b61a282062a41fbe15183/plugins/multivendorx/classes/RestAPI/Controllers/Settings.php#L77-L80 technical-description
https://github.com/multivendorx/multivendorx/blob/8a717799b02f698e4b2b61a282062a41fbe15183/plugins/multivendorx/classes/RestAPI/Controllers/Settings.php#L157-L172 technical-description
https://wordpress.org/plugins/dc-woocommerce-multi-vendor/ product
VulnCheck Advisory: MultiVendorX through 5.0.19 Incorrect Authorization via Settings REST Endpoint third-party-advisory