CVE-2023-54403
Yonyou U8 CRM Arbitrary File Read via getemaildata.php
Yonyou U8 CRM
CVSS
8.7HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.46%Chance of exploitation activity in the next 30 days, higher than 38% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 6
- U8 CRMunaffected: 18CVE List
- U8 CRMunaffected: 16.5CVE List
- U8 CRMaffected: 16.1CVE List
- U8 CRMaffected: 16.0CVE List
- U8 CRMaffected: 15.1CVE List
- U8 CRMaffected: 13CVE List
References 5
- security.yonyou.com/#/noticeInfo?id=624Fixvia CVE List
- vulncheck.com/advisories/yonyou-u8-crm-arbitrary-file-read-via-getemaildata-phpAdvisoryvia CVE List
- 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.mdExploitvia CVE List
- github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/yonyou/yonyou-u8-crm-lfi.yamlReferencevia CVE List
- yonyou.com/Global/Referencevia CVE List