CVE-2025-4305Public exploitNetwork attack vector

Authenticated code execution via unchecked file extension

Published May 6, 2025 · Updated May 6, 2025

Unrestricted file upload in Kefaming Mayi 1.3.0 through 1.3.9 allows remote authenticated users to execute code via a crafted PHP file. The Upload action in app/tools/controller/File.php passes the submitted file through saveFileInfo to putFile without validating its extension, then stores it beneath a web-accessible uploads path. A valid PHP session and access to the form-upload workflow are required; requesting the stored PHP file executes server-side code.

CVSS severity5.3
Medium
EPSS probability0.32%
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 Kefaming Mayi 1.3.0 through 1.3.9 allows remote authenticated users to execute code via a crafted PHP file. The Upload action in app/tools/controller/File.php passes the submitted file through saveFileInfo to putFile without validating its extension, then stores it beneath a web-accessible uploads path. A valid PHP session and access to the form-upload workflow are required; requesting the stored PHP file executes server-side code.

The record

CVE
CVE-2025-4305
Published
May 6, 2025
Updated
May 6, 2025
Vendor
Kefaming
Product
Mayi
Classifications
CWE-284, CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2025CVE publishedPublication date reported by the CVE source.
  2. May 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.3.0
  2. Affected versionversion=1.3.1
  3. Affected versionversion=1.3.2
  4. Affected versionversion=1.3.3
  5. Affected versionversion=1.3.4
  6. Affected versionversion=1.3.5
  7. Affected versionversion=1.3.6
  8. Affected versionversion=1.3.7
  9. Affected versionversion=1.3.8
  10. Affected versionversion=1.3.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kefaming · Mayiversion=1.3.0; version=1.3.1; version=1.3.2; version=1.3.3; version=1.3.4; version=1.3.5; version=1.3.6; version=1.3.7; version=1.3.8; version=1.3.9

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Controls
CWE-434Unrestricted Upload
T1505.003Web Shell

Public exploit references

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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