CVE-2026-16264CWE-639

CVE-2026-16264

Medium · published September 23, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
8.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00194 · 8.6th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-23T10:17Z
References (1)
https://wpscan.com/vulnerability/0dd1de2d-e9bb-4c42-a78b-2643d43dfed6/ · [email protected]
EPSS history
Timeline
  • 24 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 23 SEP 06:00Z
    Newsletters < 4.18.1 - Unauthenticated Subscriber Record Overwrite and PII Disclosure via IDOR
    cvelistv5