CVE-2026-86823 — Newsletter < 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter
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 …
Published: 2026-09-16 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7