{"affected": [{"affectedData": [{"product": "Movable Type (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "8.0.0 to 8.0.6"}, {"status": "affected", "version": "8.4.0 to 8.4.2 (8 series)"}]}, {"product": "Movable Type (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "7 r.5508 and earlier (7 series)"}]}, {"product": "Movable Type Advanced (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "8.0.0 to 8.0.6"}, {"status": "affected", "version": "8.4.0 to 8.4.2 (8 series)"}]}, {"product": "Movable Type Advanced (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "7 r.5508 and earlier (7 series)"}]}, {"product": "Movable Type Premium (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "2.09 and earlier (2 series)"}]}, {"product": "Movable Type Premium (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "1.66 and earlier (1 series)"}]}, {"product": "Movable Type Premium (Advanced Edition) (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "2.09 and earlier (2 series)"}]}, {"product": "Movable Type Premium (Advanced Edition) (Software Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "1.66 and earlier (1 series)"}]}, {"product": "Movable Type (Cloud Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "8.6.0 (8 series)"}]}, {"product": "Movable Type (Cloud Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "7 r.5508 (7 series)"}]}, {"product": "Movable Type Premium (Cloud Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "2.09 (2 series)"}]}, {"product": "Movable Type Premium (Cloud Edition)", "vendor": "Six Apart Ltd.", "versions": [{"status": "affected", "version": "1.66 (1 series)"}]}], "source": "vultures@jpcert.or.jp"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "URL redirection to untrusted site ('Open Redirect') issue exists in Movable Type. If this vulnerability is exploited, an invalid parameter may be inserted into the password reset page, which may lead to redirection to an arbitrary URL."}, {"lang": "es", "value": "Existe un problema de redirecci\u00f3n de URL a un sitio no confiable ('Open Redirect') en Movable Type. Si se explota esta vulnerabilidad, se podr\u00eda insertar un par\u00e1metro no v\u00e1lido en la p\u00e1gina de restablecimiento de contrase\u00f1a, lo que podr\u00eda provocar una redirecci\u00f3n a una URL arbitraria."}], "id": "CVE-2025-55706", "lastModified": "2026-06-17T09:42:05.857", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "vultures@jpcert.or.jp", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "vultures@jpcert.or.jp", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-55706", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-08-20T15:57:20.123486Z", "version": "2.0.3"}}]}, "published": "2025-08-20T05:15:28.253", "references": [{"source": "vultures@jpcert.or.jp", "url": "https://jvn.jp/en/jp/JVN76729865/"}, {"source": "vultures@jpcert.or.jp", "url": "https://movabletype.org/news/2025/08/mt-843-released.html"}], "sourceIdentifier": "vultures@jpcert.or.jp", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "vultures@jpcert.or.jp", "type": "Secondary"}]}