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  4. CVE 2023 54403 yonyou u8 crm arbitrary file read via
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Back to active CVEs
High · CVSS 8.7CVE-2023-54403

Yonyou U8 CRM Arbitrary File Read via getemaildata.php

Answer in brief

CVE-2023-54403 records a High severity (CVSS 8.7) vulnerability in Yonyou U8 CRM Arbitrary File Read via getemaildata.php. The current sources do not mark it as known exploited. The current feed maps Yonyou/U8 CRM (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 30, 2026Updated Sep 30, 2026Source checked Oct 1, 2026First seen by HOL Sep 30, 2026Material review Sep 30, 2026
Upstream Advisory

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-22
Source
CVE List V5
Source checked
Oct 1, 2026
References
5 linked sources
Open source record

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Yonyou/U8 CRM (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Yonyou/U8 CRMgeneric16.1 || 16.0 || 15.1 || 13Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Yonyou/U8 CRM.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 30, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencesecurity.yonyou.com
  • Source referencevulncheck.com
  • Source referenceyonyou.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

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