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CVE-2026-16039mediumCWE-639

MStore API < 4.21.0 - Subscriber+ Order and Customer PII Disclosure via IDOR

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.5epss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
The MStore API WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller's own orders, allowing any authenticated user, including Subscribers, to read every WooCommerce order in the store together with each customer's personal information.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
Unknown · MStore API
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.