MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR
Priority LOW 13CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.
Summary
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.42 does not correctly restrict access to order information, allowing any user with the instructor role to read other users' order billing details, including name, email address, phone number and postal address, by enumerating order IDs.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed MasterStudy LMS WordPress Plugin (Unknown): 3.7.42
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 | MasterStudy LMS WordPress Plugin | before 3.7.42 | 3.7.42 | Patch available | CNA |
- MasterStudy LMS WordPress Plugin VendorUnknown Affected before 3.7.42 Fixed in 3.7.42 Patch available CNA
Remediation
- Fix · CNA MasterStudy LMS WordPress Plugin (Unknown) Fixed in 3.7.42
Timeline
- 2026-10-02 Threatist record created from CVE-2026-81200
- 2026-10-03 Alias added: GHSA-wfqg-5qqg-7qjc
References
Sources
- CVE-2026-81200 · CVE Program
- CVE-2026-81200 · NVD
- FIRST EPSS
- GHSA-wfqg-5qqg-7qjc · 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