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    4 vulnerabilities found for PaperCut MF/NG by PaperCut

    CVE-2026-82078 (GCVE-0-2026-82078)

    Vulnerability from nvd – Published: 2026-08-28 11:45 – Updated: 2026-09-01 03:56
    VLAI CISA Previdian
    Title
    PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
    Summary
    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.
    SSVC
    Exploitation: active Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-28 00:00 UTC
    CWE
    • CWE-470 - Use of Externally-Controlled input to select classes or code ('unsafe reflection')
    Impacted products
    Vendor Product Version
    PaperCut PaperCut MF/NG Affected: 0 , < 24.1.10, 25.0.13, 26.0.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-81578 (GCVE-0-2026-81578)

    Vulnerability from nvd – Published: 2026-08-28 11:39 – Updated: 2026-09-01 03:56
    VLAI CISA Previdian
    Title
    PaperCut MF/NG: Authentication Bypass
    Summary
    An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
    SSVC
    Exploitation: active Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-28 00:00 UTC
    CWE
    • CWE-305 - Authentication bypass by primary weakness
    Impacted products
    Vendor Product Version
    PaperCut PaperCut MF/NG Affected: 0 , < 24.1.10, 25.0.13, 26.0.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-82078 (GCVE-0-2026-82078)

    Vulnerability from cvelistv5 – Published: 2026-08-28 11:45 – Updated: 2026-09-01 03:56
    VLAI CISA Previdian
    Title
    PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
    Summary
    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.
    SSVC
    Exploitation: active Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-28 00:00 UTC
    CWE
    • CWE-470 - Use of Externally-Controlled input to select classes or code ('unsafe reflection')
    Impacted products
    Vendor Product Version
    PaperCut PaperCut MF/NG Affected: 0 , < 24.1.10, 25.0.13, 26.0.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-81578 (GCVE-0-2026-81578)

    Vulnerability from cvelistv5 – Published: 2026-08-28 11:39 – Updated: 2026-09-01 03:56
    VLAI CISA Previdian
    Title
    PaperCut MF/NG: Authentication Bypass
    Summary
    An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
    SSVC
    Exploitation: active Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-28 00:00 UTC
    CWE
    • CWE-305 - Authentication bypass by primary weakness
    Impacted products
    Vendor Product Version
    PaperCut PaperCut MF/NG Affected: 0 , < 24.1.10, 25.0.13, 26.0.5 (semver)
    Create a notification for this product.
    Show details on NVD website

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              "value": "An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific\u00a0conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the  completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "LOW",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-305",
                  "description": "CWE-305 Authentication bypass by primary weakness",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-28T11:54:24.601Z",
            "orgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4",
            "shortName": "PaperCut"
          },
          "references": [
            {
              "url": "https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "PaperCut MF/NG: Authentication Bypass",
          "x_generator": {
            "engine": "Vulnogram 1.0.5"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4",
        "assignerShortName": "PaperCut",
        "cveId": "CVE-2026-81578",
        "datePublished": "2026-08-28T11:39:45.402Z",
        "dateReserved": "2026-08-27T07:34:07.363Z",
        "dateUpdated": "2026-09-01T03:56:08.623Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }