CVE-2026-54416

HIGH

Pluck CMS: Unrestricted File Upload via Missing .php8 Extension in Upload Blacklist

Title source: cna

Description

Pluck CMS through 4.7.21 restricts dangerous file uploads in its admin file-management feature using a fixed blacklist in data/inc/files.php ('.php','php3','php4','php5','php6','php7','phtml','.phtm','.pht','.ph3','.ph4','.ph5','.asp','.cgi','.phar'), checked against the last 4-5 characters of the filename.

References (1)

Core 1

Core References

third-party-advisory

https://github.com/pluck-cms/pluck

Scores

CVSS v3 7.2

EPSS 0.0034

EPSS Percentile 27.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-434

Status published

Products (1)

pluck-cms/Pluck CMS < 4.7.21

Published Aug 05, 2026

Tracked Since Aug 05, 2026