{"answers":{"affected":"It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2023-27350 in the wild since at least 21 Apr 2023, including in ransomware campaigns.","fix":"No fix has been published for CVE-2023-27350 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 12 May 2023.","what":"CVE-2023-27350 is a critical authentication bypass vulnerability in PaperCut NG, published on 20 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-27350 and fix it if it is affected.\n\nWhat it is: CVE-2023-27350 is a critical authentication bypass vulnerability in PaperCut NG, published on 20 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-27350 in the wild since at least 21 Apr 2023, including in ransomware campaigns.\n\nAffected product: PaperCut NG. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-27350/ (Markdown: https://insights.sbomify.com/CVE-2023-27350/index.md)","id":"CVE-2023-27350","markdown":"https://insights.sbomify.com/CVE-2023-27350/index.md","name":"CVE-2023-27350","record":{"aliases":["GHSA-cfg6-7x4x-p3pj"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Print management software","requires_auth":"none","summary":"Remote attackers can bypass authentication to execute arbitrary code with SYSTEM privileges in PaperCut NG.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[{"product":"papercut_mf","vendor":"papercut"},{"product":"papercut_ng","vendor":"papercut"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"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 SetupCompleted class. The issue results from improper access control. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-18987.","ecosystems":[],"exploits":{"exploitdb":2,"first_seen":"2023-03-13","github_poc":14,"max_poc_stars":57,"metasploit":1,"nuclei":1,"refs":[{"date":"2023-04-22T21:34:06Z","kind":"github_poc","ref":"https://github.com/horizon3ai/CVE-2023-27350","stars":57,"title":"Proof of Concept Exploit for PaperCut CVE-2023-27350"},{"date":"2023-04-21T20:13:47Z","kind":"github_poc","ref":"https://github.com/imancybersecurity/CVE-2023-27350-POC","stars":12,"title":null},{"date":"2023-04-25T20:51:23Z","kind":"github_poc","ref":"https://github.com/adhikara13/CVE-2023-27350","stars":9,"title":"Exploit for Papercut CVE-2023-27350. [+] Reverse shell [+] Mass checking"},{"date":"2023-04-21T09:19:13Z","kind":"github_poc","ref":"https://github.com/MaanVader/CVE-2023-27350-POC","stars":5,"title":"A simple python script to check if a service is vulnerable"},{"date":"2025-03-09T18:08:42Z","kind":"github_poc","ref":"https://github.com/monke443/CVE-2023-27350","stars":4,"title":"Unauthenticated remote command execution in Papercut service allows an attacker to execute commands due to improper access controls in the SetupCompleted Java class."},{"date":"2023-05-27T11:32:35Z","kind":"github_poc","ref":"https://github.com/Ap0dexMe0/CVE-2023-27350","stars":2,"title":"Perfom With Massive Authentication Bypass In PaperCut MF/NG"},{"date":"2023-03-13","kind":"metasploit","ref":"exploit/multi/http/papercut_ng_auth_bypass","stars":null,"title":"PaperCut PaperCutNG Authentication Bypass"},{"date":"2023-04-25","kind":"exploitdb","ref":"51391","stars":null,"title":"PaperCut NG/MG 22.0.4 - Authentication Bypass"}],"tier":"exploited"},"has_fix":null,"headline":"PaperCut MF/NG Improper Access Control","id":"CVE-2023-27350","indexable":true,"kev":{"dateAdded":"2023-04-21","dueDate":"2023-05-12","knownRansomwareCampaignUse":"Known","product":"MF/NG","requiredAction":"Apply updates per vendor instructions.","vendorProject":"PaperCut","vulnerabilityName":"PaperCut MF/NG Improper Access Control Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2023"},"n_packages":0,"n_references":7,"next":{"headline":"PaperCut NG/MF Improper Authentication","id":"CVE-2023-27351"},"packages":[],"prev":{"headline":"BlueZ Audio Profile AVRCP Improper Validation of Array Index Remote Code Execution Vulnerability","id":"CVE-2023-27349"},"products":["NG"],"published":"2023-04-20","related":[{"cvss_score":9.4,"headline":"PaperCut NG/MF Unsafe Reflection","id":"CVE-2026-82078","kev_date_added":"2026-08-31","published":"2026-08-28"},{"cvss_score":8.8,"headline":"PaperCut NG/MF Missing Authentication for Critical Function","id":"CVE-2026-81578","kev_date_added":"2026-08-31","published":"2026-08-28"},{"cvss_score":8.4,"headline":"PaperCut NG/MF Cross-Site Request Forgery (CSRF)","id":"CVE-2023-2533","kev_date_added":"2025-07-28","published":"2023-06-20"},{"cvss_score":8.2,"headline":"PaperCut NG/MF Improper Authentication","id":"CVE-2023-27351","kev_date_added":"2026-04-20","published":"2023-04-20"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2023-39143","kev_date_added":null,"published":"2023-08-04"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2019-12135","kev_date_added":null,"published":"2019-06-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["PaperCut"]},"summary":"Remote attackers can bypass authentication to execute arbitrary code with SYSTEM privileges in PaperCut NG.","url":"https://insights.sbomify.com/CVE-2023-27350/"}