CVE-2024-53805

WP Mailster <= 1.8.16.0 - Missing Authorization

2024-12-02 00:00

Strategic Overview

Status: Patched in 1.8.17.0
Affected Plugin: WP Mailster
Affected Version: <= 1.8.16.0
CVSS: 7.5High
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2024-53805

At a glance

CVE-2024-53805 is a high-severity Missing Authorization vulnerability in the WP Mailster WordPress plugin, affecting versions <= 1.8.16.0. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high availability impact). Exploitation requires no authentication. The issue is fixed in version 1.8.17.0; sites on affected versions should update now. Disclosed December 2024, reported by Kévin Mosbahi (Mika).

Vulnerability Overview

The WP Mailster plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 1.8.16.0. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on availability.

CWE-862: Missing Authorization

Reaching this weakness in WP Mailster <= 1.8.16.0 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For WP Mailster the fix is 1.8.17.0: builds <= 1.8.16.0 are affected, anything from 1.8.17.0 onward is not.

Remediation

Update to version 1.8.17.0, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: WP Mailster 1.8.17.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-53805 https://www.wordfence.com/threat-intel/vulnerabilities/id/697105e6-3155-4199-9fee-914830674023 https://nvd.nist.gov/vuln/detail/CVE-2024-53805

Related records

Same weakness class

6.5CVE-2024-53803: WP Mailster <= 1.8.16.0 Missing AuthorizationCVE-2024-53803

Other vulnerabilities in WP Mailster

CVSS Vector

7.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

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