{"id":"CVE-2023-27351","state":"PUBLISHED","title":"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vu","description":"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.","publishedAt":"2023-04-20T00:00:00.000Z","updatedAt":"2026-10-01T18:09:39.306Z","severity":{"score":8.2,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","source":"zdi"},"assigner":"zdi","products":["PaperCut NG"],"affected":[{"vendor":"PaperCut","product":"NG","versions":[{"version":"22.0.5 (Build 63914)","status":"affected"}]}],"references":["https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","https://www.zerodayinitiative.com/advisories/ZDI-23-232/","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:05:52.290Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/27xxx/CVE-2023-27351.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-27351","state":"PUBLISHED","datePublished":"2023-04-20T00:00:00.000Z","dateUpdated":"2026-10-01T18:09:39.306Z","assignerShortName":"zdi","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateReserved":"2023-02-28T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226."}],"affected":[{"vendor":"PaperCut","product":"NG","versions":[{"version":"22.0.5 (Build 63914)","status":"affected"}]}],"references":[{"url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-232/"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"CWE-287: Improper Authentication"}]}],"providerMetadata":{"shortName":"zdi","orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateUpdated":"2023-04-20T15:35:13.491Z"},"credits":[{"lang":"en","value":"Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","tags":["x_transferred"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-232/","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T12:09:43.371Z"}},{"title":"CISA ADP Vulnrichment","references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351","tags":["government-resource"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-21T03:55:38.095423Z","id":"CVE-2023-27351","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}},{"other":{"type":"kev","content":{"dateAdded":"2026-04-20","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-01T18:09:39.306Z"}}]}}}