Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-81026
Unknown MasterStudy LMS WordPress Plugin — MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N N U L L N 4.8 .0022 11.8 —
AFFECTED
Product Versions Fixed
MasterStudy LMS WordPress Plugin unspecified —
TIMELINE
Aug 26 Reserved by WPScan
Aug 29 Published (CNA: WPScan)
Aug 30 EXPLOIT PUBLISHED — CVE-2026-81026 (Unknown MasterStudy LMS WordPress Plugin). Public exploit reference added.
Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.40 does not verify the amount, receiver, currency or status of a payment notification before marking the corresponding order completed, allowing unauthenticated users to complete full-price orders and gain access to paid content by paying only a token amount.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 26, 2026 | Reserved | Reserved by WPScan |
| August 29, 2026 | Published | Published (CNA: WPScan) |
| August 30, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-81026 (Unknown MasterStudy LMS WordPress Plugin). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | MasterStudy LMS WordPress Plugin | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81026 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
