Cross-site Scripting Vulnerability in Laborator Kalium Theme
CVE-2025-53349

6.1MEDIUM

Key Information:

Vendor

WordPress
Status
Kalium
Vendor
CVE Published:
6 November 2025

What is CVE-2025-53349?

The Laborator Kalium Theme is vulnerable to a reflected Cross-site Scripting (XSS) attack, due to improper handling of user-supplied input during web page generation. This flaw allows attackers to inject malicious scripts that can be executed in a user's browser, potentially compromising user data and session integrity. The vulnerability affects all versions of Kalium Theme up to and including 3.18.3, making it critical for users to update their installations to mitigate this risk.

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Affected Version(s)

Kalium 0 <= 3.18.3

References

https://patchstack.com/database/Wordpress/Theme/kalium/vu...
vdb-entry

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack)
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