Masteriyo LMS < 2.3.1 - Unauthenticated Arbitrary User Session Termination (Denial of Service)
Priority HIGH 80CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
The Masteriyo LMS WordPress plugin before 2.3.1 does not correctly verify authorization on an unauthenticated AJAX action used to clear user sessions, allowing unauthenticated attackers to terminate the active sessions (force-logout) of any user on the site, including administrators.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00418 36th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Masteriyo LMS (Unknown): 2.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
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 | Masteriyo LMS | before 2.3.1 | 2.3.1 | Patch available | CNA |
- Masteriyo LMS VendorUnknown Affected before 2.3.1 Fixed in 2.3.1 Patch available CNA
Remediation
- Fix · CNA Masteriyo LMS (Unknown) Fixed in 2.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13332
- 2026-10-03 Alias added: GHSA-h98r-h4wc-7hjr
References
Sources
- CVE-2026-13332 · CVE Program
- CVE-2026-13332 · NVD
- FIRST EPSS
- GHSA-h98r-h4wc-7hjr · 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