{"id":"CVE-2023-54403","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-54403","generatedAt":"2026-10-28T02:57:01.301Z","title":"Yonyou U8 CRM before V16.5 and V18 contains an arbitrary file read vulnerability in /ajax/getemaildata.php that allows unauthenticated attackers to bypass authentication using the DontCheckLogin=1 parameter and read arbitrary files via an unvalidated…","description":"Yonyou U8 CRM before V16.5 and V18 contains an arbitrary file read vulnerability in /ajax/getemaildata.php that allows unauthenticated attackers to bypass authentication using the DontCheckLogin=1 parameter and read arbitrary files via an unvalidated filePath parameter. Attackers can exploit this flaw to read sensitive files outside the web application directory, including configuration files containing database or service credentials. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.","published":"2026-09-30T21:16:52.000Z","lastModified":"2026-10-02T17:16:59.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","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/M"},"cwe":["CWE-22"],"affected":[],"epss":{"score":0.00461,"percentile":0.39683,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.00686,"percentile":0.50872}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T21:16:52.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-09-30T21:16:52.150Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8B%20U8%20CRM%E5%AE%A2%E6%88%B7%E5%85%B3%E7%B3%BB%E7%AE%A1%E7%90%86%E7%B3%BB%E7%BB%9F%20getemaildata.php%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E.md","source":"disclosure@vulncheck.com"},{"url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/yonyou/yonyou-u8-crm-lfi.yaml","source":"disclosure@vulncheck.com"},{"url":"https://security.yonyou.com/#/noticeInfo?id=624","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/yonyou-u8-crm-arbitrary-file-read-via-getemaildata-php","source":"disclosure@vulncheck.com"},{"url":"https://www.yonyou.com/Global/","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-54403","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}