CVE-2024-52369Network attack vector

Web-shell upload via unrestricted file acceptance

Published Nov 14, 2024 · Updated May 12, 2026

Unrestricted file upload in Optimal Access KBucket 4.2.2 and earlier allows remote authenticated users to upload executable web shells. Patchstack identifies the upload workflow and dangerous file acceptance but does not disclose the vulnerable handler or its omitted validation operation. Subscriber-level WordPress access is required; a successful upload places attacker-controlled executable content on the web server, enabling code execution.

CVSS severity9.9
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unrestricted file upload in Optimal Access KBucket 4.2.2 and earlier allows remote authenticated users to upload executable web shells. Patchstack identifies the upload workflow and dangerous file acceptance but does not disclose the vulnerable handler or its omitted validation operation. Subscriber-level WordPress access is required; a successful upload places attacker-controlled executable content on the web server, enabling code execution.

The record

CVE
CVE-2024-52369
Published
Nov 14, 2024
Updated
May 12, 2026
Vendor
Optimal Access
Product
KBucket
Classifications
CWE-434, CAPEC-650, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 14, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 2026Record 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=0 <=4.1.6
  2. Affected versionversion=0 <=4.2.2 changes=[{"at":"4.2.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Optimal Access · KBucketversion=0 <=4.1.6; version=0 <=4.2.2 changes=[{"at":"4.2.3","status":"unaffected"}]

Published CVSS scores

9.9PatchstackCVSS: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-650Upload a Web Shell to a Web Server
T1505.003Web Shell

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo