{"id":"CVE-2026-86824","title":"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 …","summary":"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 …","severity":"medium","cvss":4.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-326"],"product":"Newsletter","affected":["Newsletter < 9.3.8"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:08:32.830","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86824","references":[{"url":"https://wpscan.com/vulnerability/62ee25d9-ec38-402c-9959-37fd89708aca/","label":"contact@wpscan.com"}],"tags":["nvd","cve.org"],"epss":0.00152,"epssPercentile":0.03593,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T12:12:57.489291Z"},"ingestedAt":"2026-09-17T06:12:17.975Z","slug":"CVE-2026-86824","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206051,"id":"CVE-2026-86824","ts":1789651151410,"field":"cvss","old":null,"new":"4.8"},{"seq":206050,"id":"CVE-2026-86824","ts":1789651151410,"field":"severity","old":"none","new":"medium"}]}