CVE-2024-53803

WordPress WP Mailster plugin <= 1.8.16.0 - Broken Access Control vulnerability

6.5 Medium

Missing Authorization vulnerability in brandtoss WP Mailster wp-mailster allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Mailster: from n/a through <= 1.8.16.0.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.51%Up 0.5 points since Dec 7, 2024

What each source reports

CVE List Score used 6.5

WordPress WP Mailster plugin <= 1.8.16.0 - Broken Access Control vulnerability

Record: CVE-2024-53803
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2024-52135 6.5

Record: EUVD-2024-52135
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4jvf-xwmx-r87h 6.5

Missing Authorization vulnerability in brandtoss WP Mailster allows Exploiting Incorrectly...

Missing Authorization vulnerability in brandtoss WP Mailster allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Mailster: from n/a through 1.8.16.0.

Record: GHSA-4jvf-xwmx-r87h
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-862
Updated: 2026-11-02

NVD 6.5

Record: CVE-2024-53803
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-862
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-53803 is a medium vulnerability (CVSS 6.5) in Brandtoss Wp Mailster, published December 6, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 44th percentile. No source names a fixed version.