Vulnerability · Published Sep 23, 2026 · Assigned by WPScan
CVE-2026-16264Newsletters < 4.18.1 - Unauthenticated Subscriber Record Overwrite and PII Disclosure via IDOR
Medium 6.5
In plain English
A medium-severity authorization bypass via user-controlled key in Newsletters from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 81.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Newsletters WordPress plugin before 4.18.1 does not perform an ownership check on some of its subscriber management actions, and issues a management session to unauthenticated visitors on request, allowing attackers to read any subscriber's personal data and overwrite any subscriber's record including their email address.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Newsletters | 0 – before 4.18.1 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://wpscan.com/vulnerability/0dd1de2d-e9bb-4c42-a78b-2643d43dfed6/ exploit, vdb-entry, technical-description