{"id":"CVE-2026-86823","state":"PUBLISHED","title":"Newsletter < 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter","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.","publishedAt":"2026-09-16T06:00:16.296Z","updatedAt":"2026-09-17T12:33:42.412Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Newsletter"],"affected":[{"vendor":"Unknown","product":"Newsletter","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"9.3.7","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86823.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86823","state":"PUBLISHED","datePublished":"2026-09-16T06:00:16.296Z","dateUpdated":"2026-09-17T12:33:42.412Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-09-08T14:20:35.409Z"},"containers":{"cna":{"title":"Newsletter < 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Unknown","product":"Newsletter","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"9.3.7","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/2db98679-24ca-494e-a8fd-f6417a0f1ea8/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-601 URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-09-16T06:00:16.296Z"},"credits":[{"lang":"en","value":"Artus KG","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T12:17:25.728639Z","id":"CVE-2026-86823","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","type":"CWE","lang":"en","description":"CWE-601 URL Redirection to Untrusted Site ('Open Redirect')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-17T12:33:42.412Z"}}]}}}