CVE-2024-9586

Linkz.ai <= 1.1.8 - Missing Authorization to Unauthenticated Plugin Settings Update

2024-10-10 00:00

Strategic Overview

Status: Patched in 1.2.0
Affected Plugin: Linkz.ai – Automatic link previews on hover
Affected Version: <= 1.1.8
CVSS: 6.5Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2024-9586

View all Linkz.ai – Automatic link previews on hover vulnerabilities

At a glance

CVE-2024-9586 is a medium-severity Missing Authorization vulnerability in the Linkz.ai WordPress plugin, affecting versions <= 1.1.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.2.0; sites on affected versions should update now. Disclosed October 2024, reported by István Márton.

Vulnerability Overview

The Linkz.ai plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'check_auth' and 'check_logout' functions in versions up to, and including, 1.1.8. This makes it possible for unauthenticated attackers to update plugin settings.

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.

CWE-862: Missing Authorization

Linkz.ai <= 1.1.8 carries this weakness at check_auth, and reaching it takes no account at all. 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 Linkz.ai the fix is 1.2.0: builds <= 1.1.8 are affected, anything from 1.2.0 onward is not.

Remediation

Update to version 1.2.0, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Linkz.ai 1.2.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-9586 https://www.wordfence.com/threat-intel/vulnerabilities/id/b4b4ca5b-c806-4b68-acb8-6b63d6ca5728 https://nvd.nist.gov/vuln/detail/CVE-2024-9586

Related records

Same weakness class

5.4CVE-2024-9587: Linkz.ai Authenticated (Subscriber+) Plugin SettingsCVE-2024-9587

CVSS Vector

6.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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