CVE-2026-86823 — MEDIUM (5.3)

Vulnerability Description

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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-601

References

https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/

FAQ

What is CVE-2026-86823?

CVE-2026-86823 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ar...

How severe is CVE-2026-86823?

CVE-2026-86823 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-86823?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.