{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82078", "assignerOrgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "state": "PUBLISHED", "assignerShortName": "PaperCut", "dateReserved": "2026-08-28T00:13:25.684Z", "datePublished": "2026-08-28T11:45:25.388Z", "dateUpdated": "2026-08-28T11:45:25.388Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "shortName": "PaperCut", "dateUpdated": "2026-08-28T11:45:25.388Z"}, "title": "PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-470", "description": "CWE-470 Use of Externally-Controlled input to select classes or code ('unsafe reflection')", "type": "CWE"}]}], "affected": [{"vendor": "PaperCut", "product": "PaperCut MF/NG", "versions": [{"status": "affected", "version": "0", "lessThan": "24.1.10, 25.0.13, 26.0.5", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.</p>"}]}], "references": [{"url": "https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.4, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PaperCut MF/NG", "vendor": "PaperCut", "versions": [{"lessThan": "24.1.10, 25.0.13, 26.0.5", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "eb41dac7-0af8-4f84-9f6d-0272772514f4"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process."}], "id": "CVE-2026-82078", "lastModified": "2026-08-28T16:18:31.240", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "baseSeverity": "CRITICAL", "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": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "type": "Secondary"}]}, "published": "2026-08-28T16:18:31.240", "references": [{"source": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "url": "https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/"}], "sourceIdentifier": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-470"}], "source": "eb41dac7-0af8-4f84-9f6d-0272772514f4", "type": "Secondary"}]}

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