What is CVE-2026-86824?

CVE-2026-86824 is a medium-severity vulnerability in Newsletter, classified under Inadequate Encryption Strength. CVSS score: 4.8/10. Published 2026-09-17.

How severe is CVE-2026-86824?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Newsletter

CVE-2026-86824

The Newsletter WordPress plugin before 9.3.8 does not generate its email tracking signing key with sufficient entropy and signs its tracking links with an unkeyed hash, allowing an unauthenticated attacker who recovers that key offline to forge tracking links, obtain any subscriber's session token, and read and modify that subscriber's stored personal data.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Unknown Newsletter

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86824?: CVE-2026-86824 is a medium-severity vulnerability in Newsletter, classified under Inadequate Encryption Strength. CVSS score: 4.8/10. Published 2026-09-17.
How severe is CVE-2026-86824?: Medium severity. CVSS v3 base score is 4.8 out of 10.