WordPress KBucket plugin <= 4.2.2 - Arbitrary File Upload vulnerability

published 2024-11-14 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-45864

cvss: 9.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits: 0; none known

Unrestricted Upload of File with Dangerous Type vulnerability in Optimal Access KBucket kbucket allows Upload a Web Shell to a Web Server.This issue affects KBucket: from n/a through <= 4.2.2.

Patch / fix

fixed in 1

Optimal Access KBucket 4.2.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 23 mo ago (2024-11-14)

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Optimal Access KBucket
optimal_access kbucket

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/kbucket/vulnerability/wordpress-kbucket-plugin-4-1-6-arbitrary-file-upload-vulnerab
vdb-entry

Sources

CVE List CVE-2024-52369
NVD CVE-2024-52369

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary