Vulnerability · Published Apr 15, 2026 · Assigned by Patchstack
CVE-2026-40742WordPress Nelio AB Testing plugin <= 8.2.8 - Sensitive Data Exposure vulnerability
Medium 5.3
In plain English
A medium-severity missing authorization in Nelio AB Testing from Nelio Software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.2%top 91.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Missing Authorization vulnerability in Nelio Software Nelio AB Testing nelio-ab-testing allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Nelio AB Testing: from n/a through <= 8.2.8.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Nelio Software | Nelio AB Testing | 0 – through 8.2.8 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N