{"id":"CVE-2024-58396","kind":"vulnerability","aliases":["CVE-2024-58396"],"related":[],"title":"YouDataSum CPAS audit system lets anyone read server files","description":"YouDataSum CPAS Audit Management System V4 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating the fileId parameter. Attackers can send GET requests to /cpasm4/plugInManController/downPlugs with ../ sequences in fileId to retrieve system files like /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-01-13.","summary":"The CPAS Audit Management System V4 has a path traversal flaw in its plugin download endpoint, where the fileId parameter accepts ../ sequences. An unauthenticated attacker can send a GET request to /cpasm4/plugInManController/downPlugs and read arbitrary system files such as /etc/passwd.","severity":"high","cvss":8.7,"epss":0.00389,"exploited":true,"exploited_at":null,"products":[{"name":"CPAS Audit Management System","fixed":[],"affected":"V4 (no finer range published)","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["cpas-audit-management-system","other","self-hosted","windows"],"not_affected_if":["not-deployed","not-internet-exposed","patched-version"],"how_to_check":"Check whether a CPAS Audit Management System V4 instance is deployed, then request /cpasm4/plugInManController/downPlugs with fileId set to ../../../../etc/passwd and look for passwd contents in the response.","fix":"No vendor patch known. Do not expose /cpasm4/ to the internet; block /cpasm4/plugInManController/downPlugs at a WAF or reverse proxy; restrict access by VPN or IP allowlist; check logs for ../ in fileId; assume server files (configs, credentials) were readable and rotate secrets if exposed.","status":"open","published_at":"2026-10-22T11:17:06+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","triaged_at":"2026-10-23T22:35:18+00:00","updated_at":"2026-10-24T07:15:51+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-23T22:35:18Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"YouDataSum CPAS audit system lets anyone read server files","impact":"medium","summary":"The CPAS Audit Management System V4 has a path traversal flaw in its plugin download endpoint, where the fileId parameter accepts ../ sequences. An unauthenticated attacker can send a GET request to /cpasm4/plugInManController/downPlugs and read arbitrary system files such as /etc/passwd.","category":"other","who_cares":["cpas-audit-management-system","self-hosted","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads arbitrary server files, including configuration and credentials.","analyst_note":"Find the vendor patch version and affected version range at the NVD entry or YouDataSum's site; sources give no fix.","how_to_check":"Check whether a CPAS Audit Management System V4 instance is deployed, then request /cpasm4/plugInManController/downPlugs with fileId set to ../../../../etc/passwd and look for passwd contents in the response.","needs_analyst":true,"not_affected_if":["not-deployed","patched-version"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000515,"input_tokens":2967,"output_tokens":436,"severity_before":"high"},"analyst_status":"done","analyst_note":"Find the vendor patch version and affected version range at the NVD entry or YouDataSum's site; sources give no fix.","search":"'-01':122C '-13':123C '-2024':11A,14A '-58396':12A,15A '/cpasm4/pluginmancontroller/downplugs':61B,100C '/etc/passwd':69B,110C '2025':121C 'accept':50B 'allow':82C 'anyon':6A 'arbitrari':64B,87C 'attack':54B,84C,94C 'audit':3A,17A,22B,32B,72C 'contain':76C 'cpas':2A,16A,21B,31B,71C 'cpas-audit-management-system':20B 'cve':10A,13A 'download':44B 'endpoint':45B 'evid':112C 'exploit':111C 'file':9A,66B,88C,108C 'fileid':48B,92C,104C 'first':114C 'flaw':40B 'foundat':119C 'get':58B,97C 'host':28B 'let':5A 'like':109C 'manag':23B,33B,73C 'management':18A 'manipul':90C 'observ':115C 'paramet':49B,93C 'path':38B,78C 'plugin':43B 'read':7A,63B,86C 'request':59B,98C 'retriev':106C 'self':27B 'self-host':26B 'send':56B,96C 'sequenc':51B,102C 'server':8A 'shadowserv':118C 'system':4A,19A,24B,34B,65B,74C,107C 'travers':39B,79C 'unauthent':53B,83C 'v4':35B,75C 'vulner':80C 'window':29B 'youdatasum':1A,70C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"A","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T11:17:06+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2024-58396","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-58396","severity":null,"published_at":"2026-10-22T11:17:06+00:00","modified_at":"2026-10-23T22:16:51+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"analyst","external_id":"CVE-2024-58396:501","url":null,"severity":null,"published_at":"2026-10-23T23:42:57+00:00","modified_at":"2026-10-23T23:42:57+00:00","first_seen_at":"2026-10-23T23:42:57+00:00","fetched_at":"2026-10-23T23:42:57+00:00","note":"VulnCheck advisory (CNA) says Shadowserver observed exploitation from 2025-01-13; PoCs and a Nuclei template are referenced on that page (links not extractable). No vendor advisory or fixed version found; affected is just 'V4'. No X/social search done."},{"source":"epss","external_id":"CVE-2024-58396","url":"https://api.first.org/data/v1/epss?cve=CVE-2024-58396","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-24T07:15:51+00:00","note":null}],"documents":[{"id":2126,"url":"https://www.vulncheck.com/advisories/youdatasum-cpas-audit-management-system-v4-path-traversal-via-downplugs-fileid","title":"VulnCheck: CPAS Audit Management System V4 Path Traversal via downPlugs fileId","kind":"advisory","source":"analyst","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}