CVE-2026-18234
MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via Wallet
- Published
- Aug 29, 2026
- Updated
- Aug 30, 2026
- Assigning CNA
- WPScan
- Evidence observed
- Sep 26, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NLow · next 30 days
- Percentile
- 5.9%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
The MStore API WordPress plugin before 4.21.1 does not verify that the order targeted by its wallet payment handling belongs to the requester, and does not deduct the wallet balance for most payment methods, allowing any authenticated user, including Subscribers, to mark arbitrary orders as paid without any payment being taken.
Sources
Exploit-Index : The Ultimate CVE Proof of Concept (PoC) & Exploit Database. A zero-API, high-performance aggregator for 0days, vulnerabilities, and Threat Intelligence. Replacing manual searches for elite SOC teams, DevSecOps, and Bug Bounty Hunters.
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