MStore API < 4.21.1 - Subscriber+ Arbitrary Order Completion
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.
Summary
The MStore API WordPress plugin before 4.21.1 does not verify that the order targeted by one of its delivery endpoints belongs to the requester, allowing any authenticated user, including Subscribers, to mark arbitrary orders as completed and paid without any payment being made.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| Unknown | MStore API | before 4.21.1 | 4.21.1 | Patch available | CNA |
- MStore API VendorUnknown Affected before 4.21.1 Fixed in 4.21.1 Patch available CNA
Remediation
- Fix · CNA MStore API (Unknown) Fixed in 4.21.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
MStore API 4.21.1
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-14995 MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via WalletPriority LOW 29
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18233
- 2026-10-03 Alias added: GHSA-76wx-7j8r-7mr2
References
Sources
- CVE-2026-18233 · CVE Program
- CVE-2026-18233 · NVD
- FIRST EPSS
- GHSA-76wx-7j8r-7mr2 · GitHub Advisory Database · CC BY 4.0
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