{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-0895", "assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "state": "PUBLISHED", "assignerShortName": "TYPO3", "dateReserved": "2026-01-13T15:24:31.992Z", "datePublished": "2026-01-20T07:19:00.786Z", "dateUpdated": "2026-01-20T07:21:28.109Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://packagist.org/", "defaultStatus": "unaffected", "packageName": "cpsit/typo3-mailqueue", "product": "Extension \"Mailqueue\"", "repo": "https://github.com/CPS-IT/mailqueue", "vendor": "TYPO3", "versions": [{"lessThan": "0.4.3", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "0.5.1", "status": "affected", "version": "0.5.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Elias H\u00e4u\u00dfler"}, {"lang": "en", "type": "remediation developer", "value": "Elias H\u00e4u\u00dfler"}], "datePublic": "2026-01-20T07:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The extension extends TYPO3\u2019 <code>FileSpool</code> component, which was vulnerable to Insecure Deserialization prior to <a target=\"_blank\" rel=\"nofollow\" href=\"https://typo3.org/security/advisory/typo3-core-sa-2026-004\">TYPO3-CORE-SA-2026-004</a>. Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory <a target=\"_blank\" rel=\"nofollow\" href=\"https://typo3.org/security/advisory/typo3-core-sa-2026-004\">TYPO3-CORE-SA-2026-004</a>."}], "value": "The extension extends TYPO3\u2019 FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 . Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 ."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "baseScore": 5.2, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "shortName": "TYPO3", "dateUpdated": "2026-01-20T07:21:28.109Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-001"}, {"tags": ["patch"], "url": "https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db"}, {"tags": ["patch"], "url": "https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733"}], "source": {"discovery": "UNKNOWN"}, "title": "Insecure Deserialization in extension \"Mailqueue\" (mailqueue)", "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "The extension extends TYPO3\u2019 FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 . Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension. More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004 https://typo3.org/security/advisory/typo3-core-sa-2026-004 ."}], "id": "CVE-2026-0895", "lastModified": "2026-01-20T08:16:01.883", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.2, "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/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": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}, "published": "2026-01-20T08:16:01.883", "references": [{"source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "url": "https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733"}, {"source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "url": "https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db"}, {"source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-001"}], "sourceIdentifier": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}

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