CVE-2025-53348 MEDIUM

CVE-2025-53348: WordPress Kalium Theme <= 3.18.3 - Broken Access Control Vulnerability

Vendor Laborator

Product Kalium

Weakness CWE-862 · Missing authorization

Published September 9, 2025

Last update April 29, 2026

View on NVD All CVEs

CVSS base score

5.3/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in Laborator Kalium kalium allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Kalium: from n/a through <= 3.18.3.

Explanation of Vulnerability in Simple Terms

02Summary

Kalium versions up to 3.18.3 lack proper authorization checks, allowing unauthenticated attackers to modify data on the site. The vulnerability requires no user interaction and can be exploited over the network. Site administrators should update to a version newer than 3.18.3 immediately.

What an attacker can do

03Attacker Capabilities

Modify site data without authentication or permission.

Potential impact on your site

04Site Impact

Unauthorized changes to site content or configuration by remote attackers.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

September 9, 2025 CVE published

April 29, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-53348 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html

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