CVE-2026-86823CWE-601

CVE-2026-86823

Medium · published September 16, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
24.1
In the wild
Unconfirmed
What it is

The Newsletter WordPress plugin before 9.3.7 does not validate the destination of the redirect performed after a public subscription action, allowing unauthenticated attackers to redirect users to arbitrary external sites and to disclose a subscriber token that grants access to that subscriber record's front-end actions.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00323 · 24.1th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-09-16T10:16Z
References (1)
https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/ · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 16 SEP 06:00Z
    Newsletter < 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter
    cvelistv5