CVE-2026-4509

| EUVD-2026-14239 MEDIUM
2026-03-21 VulDB
6.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

4
PoC Detected
Mar 23, 2026 - 14:31 vuln.today
Public exploit code
Analysis Generated
Mar 21, 2026 - 06:15 vuln.today
EUVD ID Assigned
Mar 21, 2026 - 06:15 euvd
EUVD-2026-14239
CVE Published
Mar 21, 2026 - 06:02 nvd
MEDIUM 6.3

Description

A security flaw has been discovered in PbootCMS up to 3.2.12. This affects an unknown function of the file core/function/file.php of the component File Upload. The manipulation of the argument black results in incomplete blacklist. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Analysis

PbootCMS versions up to 3.2.12 contain an incomplete blacklist bypass vulnerability in the file upload functionality (core/function/file.php) that allows authenticated attackers to upload dangerous files by manipulating the blacklist parameter. An attacker with login credentials can bypass file type restrictions to upload arbitrary files, potentially achieving remote code execution or other malicious outcomes. …

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Remediation

Within 30 days: Identify affected systems running PbootCMS and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

52
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: +20

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CVE-2026-4509 vulnerability details – vuln.today

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