MStore API < 4.21.1 - Subscriber+ Arbitrary Order Payment Bypass via Wallet
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 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.
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-2026-14994 MStore API < 4.21.1 - Subscriber+ Arbitrary Order CompletionPriority LOW 29
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18234
- 2026-10-03 Alias added: GHSA-jmq8-gg6r-m32f
References
Sources
- CVE-2026-18234 · CVE Program
- CVE-2026-18234 · NVD
- FIRST EPSS
- GHSA-jmq8-gg6r-m32f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences