CVE-2025-15540

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Arbitrary Code Execution via Unsandboxed JavaScript in Raytha CMS

Publication date: 2026-03-16

Last updated on: 2026-03-17

Assigner: CERT.PL

Description

"Functions" module in Raytha CMS allows privileged users to write custom code to add functionality to application. Due to a lack of sandboxing or access restrictions, JavaScript code executed through Raytha’s “functions” feature can instantiate .NET components and perform arbitrary operations within the application’s hosting environment. This issue was fixed in version 1.4.6.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-16

Last Modified

2026-03-17

Generated

2026-07-06

AI Q&A

2026-03-16

EPSS Evaluated

2026-07-05

NVD

CVE-2025-15540

EUVD

EUVD-2025-208697

Affected Vendors & Products

Vendor	Product	Version / Range
raytha	raytha	to 1.4.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

The vulnerability exists in the "Functions" module of Raytha CMS, which allows privileged users to write custom JavaScript code to add functionality to the application.

Due to a lack of sandboxing or access restrictions, the JavaScript code executed through this feature can instantiate .NET components and perform arbitrary operations within the application's hosting environment.

This means that malicious or unintended code could execute with high privileges, potentially compromising the system.

Impact Analysis

This vulnerability can allow an attacker with privileged access to execute arbitrary code within the hosting environment of Raytha CMS.

Such arbitrary operations could lead to unauthorized actions, data compromise, or disruption of the application and its environment.

Because the vulnerability allows instantiation of .NET components, it could be leveraged to perform a wide range of malicious activities depending on the environment and permissions.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability in Raytha CMS was fixed in version 1.4.6.

To mitigate this vulnerability, you should immediately upgrade your Raytha CMS installation to version 1.4.6 or later.

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