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TI-2023-30652 Aliases CVE-2023-54403GHSA-8vgx-v6gm-mhxr

Yonyou U8 CRM Arbitrary File Read via getemaildata.php

Priority MEDIUM 44CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00461 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed U8 CRM (Yonyou): 18, 16.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YonyouU8 CRM16.1; 16.0; 15.1; 1318, 16.5Patch availableCNA
  • U8 CRM VendorYonyou Affected 16.1; 16.0; 15.1; 13 Fixed in 18, 16.5 Patch available CNA

Remediation

  • Fix · CNA U8 CRM (Yonyou) Fixed in 18, 16.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-54403
  2. 2026-10-03 Alias added: GHSA-8vgx-v6gm-mhxr

References

Exploit 1

Patch 1

Other 2

  • TI-2025-24208 Yonyou NC BeanShell Command Injection CVSS 4.0CRITICAL 10.0
  • TI-2024-38464 Yonyou U8 CRM SQL Injection via fillbacksettingedit.php CVSS 4.0CRITICAL 9.3
  • TI-2023-30648 Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet CVSS 4.0CRITICAL 9.3
  • TI-2015-08097 Seeyon A6 OA Unauthenticated SQL Injection via downloadAtt.jsp CVSS 4.0HIGH 8.7
  • TI-2026-63446 Yonyou KSOA search_list.jsp sql injection CVSS 4.0MEDIUM 6.9
  • TI-2026-00906 Yonyou KSOA HTTP GET Parameter user_popedom.jsp sql injection CVSS 4.0MEDIUM 6.9
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences