{"id":"CVE-2023-2533","kind":"vulnerability","aliases":["CVE-2023-2533"],"related":[],"title":"A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific…","description":"A Cross-Site Request Forgery (CSRF) vulnerability has been identified in\nPaperCut NG/MF, which, under specific conditions, could potentially enable\nan attacker to alter security settings or execute arbitrary code. This could\nbe exploited if the target is an admin with a current login session. Exploiting\nthis would typically involve the possibility of deceiving an admin into clicking\na specially crafted malicious link, potentially leading to unauthorized changes.","summary":"PaperCut NG and PaperCut MF print management servers have a cross-site request forgery flaw that lets an attacker make an authenticated admin's browser change security settings or run code. CISA lists it as actively exploited in the wild.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2025-07-28T00:00:00+00:00","products":[{"name":"PaperCut NG/MF","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"papercut mf","fixed":["20.1.8"],"affected":"< 20.1.8","ecosystem":"vendor"},{"name":"papercut mf","fixed":["21.2.12"],"affected":">= 21.0.0, < 21.2.12","ecosystem":"vendor"},{"name":"papercut mf","fixed":["22.1.1"],"affected":">= 22.0.0, < 22.1.1","ecosystem":"vendor"},{"name":"papercut ng","fixed":["20.1.8"],"affected":"< 20.1.8","ecosystem":"vendor"},{"name":"papercut ng","fixed":["21.2.12"],"affected":">= 21.0.0, < 21.2.12","ecosystem":"vendor"},{"name":"papercut ng","fixed":[],"affected":">= 22.0.0, <= 22.1.1","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","on-prem","papercut-mf","papercut-ng","print-server","vendor"],"not_affected_if":["unknown"],"how_to_check":"Identify PaperCut NG/MF server versions in use; the sources do not give affected version ranges.","fix":"Apply the vendor mitigations per PaperCut's advisory; the sources do not name a fixed version.\nIf mitigations are unavailable, discontinue use of the product per CISA guidance.","status":"open","published_at":"2023-06-20T15:15:11+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:46:40+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T20:46:40Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor mitigations per PaperCut's advisory; the sources do not name a fixed version.\nIf mitigations are unavailable, discontinue use of the product per CISA guidance.","reach":"internet","summary":"PaperCut NG and PaperCut MF print management servers have a cross-site request forgery flaw that lets an attacker make an authenticated admin's browser change security settings or run code. CISA lists it as actively exploited in the wild.","category":"vendor","who_cares":["papercut-ng","papercut-mf","print-server","on-prem"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker alters security settings or executes arbitrary code on the print server via admin browser","analyst_note":"Find affected version ranges, fixed versions and mitigation steps in PaperCut's vendor advisory and the NVD/CISA KEV entry for CVE-2023-2533.","how_to_check":"Identify PaperCut NG/MF server versions in use; the sources do not give affected version ranges.\nunknown\nunknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00047,"input_tokens":2561,"output_tokens":427,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':19A,22A '-2533':20A,23A 'activ':88B 'admin':75B,133C,149C 'alter':117C 'arbitrari':122C 'attack':71B,115C 'authent':74B 'browser':77B 'chang':78B,161C 'cisa':84B 'click':151C 'code':83B,123C 'condit':110C 'could':111C,125C 'craft':154C 'cross':3A,63B,95C 'cross-sit':2A,62B,94C 'csrf':7A,99C 'current':136C 'cve':18A,21A 'deceiv':147C 'enabl':113C 'execut':121C 'exploit':38B,89B,127C,139C 'flaw':67B 'forgeri':6A,66B,98C 'identifi':11A,103C 'involv':143C 'lead':158C 'let':69B 'link':156C 'list':85B 'login':137C 'make':72B 'malici':155C 'manag':58B 'mf':27A,29A,31A,44B,56B 'ng':33A,35A,37A,47B,53B 'ng/mf':14A,25A,106C 'on-prem':39B 'papercut':13A,24A,26A,28A,30A,32A,34A,36A,43B,46B,52B,55B,105C 'papercut-mf':42B 'papercut-ng':45B 'possibl':145C 'potenti':112C,157C 'prem':41B 'print':49B,57B 'print-serv':48B 'request':5A,65B,97C 'run':82B 'secur':79B,118C 'server':50B,59B 'session':138C 'set':80B,119C 'site':4A,64B,96C 'special':153C 'specif':17A,109C 'target':130C 'typic':142C 'unauthor':160C 'vendor':51B 'vulner':8A,100C 'wild':92B 'would':141C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-06-20T15:15:11+00:00","kev":{"dateAdded":"2025-07-28","dueDate":"2025-08-18","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H","cvss_by":"help@fluidattacks.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-2533","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-2533","severity":null,"published_at":"2025-07-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T20:35:32+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-2533","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-2533","severity":null,"published_at":"2023-06-20T15:15:11+00:00","modified_at":"2026-06-17T05:52:47+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}