CVE-2023-49858 MEDIUM

CVE-2023-49858: WordPress Custom Login plugin <= 4.1.0 - Broken Access Control vulnerability

Vendor Austin

Product Custom Login

Weakness CWE-862 · Missing authorization

Published December 9, 2024

Last update April 29, 2026

View on NVD All CVEs

CVSS base score

4.3/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality None

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in Austin Custom Login custom-login allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Custom Login: from n/a through <= 4.1.0.

Explanation of Vulnerability in Simple Terms

02Summary

Custom Login versions 4.1.0 and earlier lack proper authorization checks, allowing authenticated users to modify settings they should not have access to. An attacker with a low-privilege account can alter configuration without proper permission validation. The vulnerability affects the integrity of site settings but does not expose sensitive data or cause service disruption.

What an attacker can do

03Attacker Capabilities

Modify Custom Login settings without proper authorization.

Potential impact on your site

04Site Impact

Unauthorized users can change plugin configuration, potentially disrupting login behavior or security settings.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege authenticated account on the site.

Key dates

06Disclosure timeline

December 9, 2024 CVE published

April 29, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-49858 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

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