{"schema":"threatline.record/2","record":{"id":"CVE-2023-27351","aliases":[],"summary":"PaperCut NG/MF Improper Authentication Vulnerability","details":"PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.","categories":["Unclassified"],"product":"NG/MF","vendor":"PaperCut","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-27351","source_modified_at":"2026-10-01T18:09:39.306Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"NG","vendor":"PaperCut","versions":[{"version":"22.0.5 (Build 63914)","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.2,"severity":"High","kev":{"listed":true,"date_added":"2026-04-20","due_date":"2026-05-04","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Known"},"epss":{"probability":0.78052,"percentile":0.99578,"score_date":"2026-10-23"},"published_at":"2023-04-20T00:00:00.000Z","modified_at":"2026-10-01T18:09:39.306Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2023-27351","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-01T18:09:39.306Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-27351.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2023-27351","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27351","source":"CISA KEV"},{"source":"CVE List","url":"https://www.zerodayinitiative.com/advisories/ZDI-23-232/","tags":["x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2026-04-21T03:55:38.095423Z"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"PaperCut NG - Authentication Bypass","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-27351.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-01T18:09:39.306Z","content_hash":"b0bc1ee0b6b693670375829dc6bed2795e6b386351eaa970d5329cc9d4e85b49"}}