CVE-2026-16324Network attack vector

Unauthenticated file upload via unrestricted File argument

Published Jul 20, 2026 · Updated Jul 20, 2026

Unrestricted file upload in MetaCRM 6.4.0 Beta06 allows remote attackers to upload files through /business/qnaire/upload.jsp. The endpoint processes the attacker-controlled File argument without restricting uploads to safe file types, permitting unapproved content to be stored. No authentication or user interaction is required; the published evidence establishes unauthorized file writes but does not establish code execution.

CVSS severity7.3
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in MetaCRM 6.4.0 Beta06 allows remote attackers to upload files through /business/qnaire/upload.jsp. The endpoint processes the attacker-controlled File argument without restricting uploads to safe file types, permitting unapproved content to be stored. No authentication or user interaction is required; the published evidence establishes unauthorized file writes but does not establish code execution.

The record

CVE
CVE-2026-16324
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Beijing Meite Software Technology Co., Ltd.
Product
MetaCRM
Classifications
CWE-284, CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.0 Beta06

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Beijing Meite Software Technology Co., Ltd. · MetaCRMversion=6.4.0 Beta06

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
5.5GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Controls
CWE-434Unrestricted Upload
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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