CVE-2026-38526Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published Apr 14, 2026 · Updated Apr 14, 2026

Unrestricted file upload in Webkul Krayin CRM 2.2.x allows remote authenticated users to execute PHP code through the TinyME upload endpoint. TinyMCEController accepts a multipart file without enforcing extension or content allowlists, preserves a .php filename, and returns a web-accessible upload path that the PHP runtime executes. Any valid CRM account can reach the endpoint; successful execution runs with the web server process's filesystem and application-data access.

CVSS severity9.9
Critical
EPSS probability3.82%
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 Webkul Krayin CRM 2.2.x allows remote authenticated users to execute PHP code through the TinyME upload endpoint. TinyMCEController accepts a multipart file without enforcing extension or content allowlists, preserves a .php filename, and returns a web-accessible upload path that the PHP runtime executes. Any valid CRM account can reach the endpoint; successful execution runs with the web server process's filesystem and application-data access.

The record

CVE
CVE-2026-38526
Published
Apr 14, 2026
Updated
Apr 14, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.9MITRECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component Web Shell
T1190Exploit Public-Facing Application

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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