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    "cveMetadata": {
        "cveId": "CVE-2026-6180",
        "assignerOrgId": "eb41dac7-0af8-4f84-9f6d-0272772514f4",
        "state": "PUBLISHED",
        "assignerShortName": "PaperCut",
        "dateReserved": "2026-04-13T05:21:02.099Z",
        "datePublished": "2026-05-05T06:19:44.725Z",
        "dateUpdated": "2026-05-05T14:13:10.635Z"
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                "shortName": "PaperCut",
                "dateUpdated": "2026-05-05T06:19:44.725Z"
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            "title": "PaperCut MF: Card truncation on HP readers",
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                    "descriptions": [
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                            "lang": "en",
                            "cweId": "CWE-367",
                            "description": "CWE-367 Time-of-check time-of-use (TOCTOU) race condition",
                            "type": "CWE"
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                    ]
                },
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                            "lang": "en",
                            "cweId": "CWE-20",
                            "description": "CWE-20 Improper input validation",
                            "type": "CWE"
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                    ]
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            ],
            "affected": [
                {
                    "vendor": "PaperCut",
                    "product": "PaperCut NG/MF",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "24.1.9",
                            "versionType": "semver"
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                            "version": "0",
                            "lessThan": "25.0.10",
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                    "value": "A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes.\n\n\n\nThis leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.",
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                            "value": "<p>A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes.</p><p>This leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.</p>"
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.papercut.com/kb/Main/papercut-ng-mf-and-papercut-hive-security-bulletin-may-2026/"
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                        "attackVector": "PHYSICAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "LOW",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "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": "MEDIUM",
                        "baseScore": 4.1,
                        "vectorString": "CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N"
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                                "timestamp": "2026-05-05T13:47:26.998229Z",
                                "id": "CVE-2026-6180",
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                                        "Exploitation": "none"
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