{"id":"CVE-2026-86823","title":"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 disclos…","summary":"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 disclos…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-601"],"product":"Newsletter","affected":["Newsletter < 9.3.7"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T13:16:54.037","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86823","references":[{"url":"https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/","label":"contact@wpscan.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-17T12:17:25.728639Z"},"epss":0.00323,"epssPercentile":0.22676,"ingestedAt":"2026-09-16T06:51:06.254Z","slug":"CVE-2026-86823","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":206014,"id":"CVE-2026-86823","ts":1789651142216,"field":"cvss","old":null,"new":"5.3"},{"seq":206013,"id":"CVE-2026-86823","ts":1789651142216,"field":"severity","old":"none","new":"medium"}]}