CVE-2025-30148 - CVE House

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Status published Medium CVE-2025-30148

Silverstripe Framework has a XSS vulnerability in HTML editor

5.4 CVSS

Vulnerability Description

Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. Prior to 5.3.23, bad actor with access to edit content in the CMS could send a specifically crafted encoded payload to the server, which could be used to inject a JavaScript payload on the front end of the site. The payload would be sanitized on the client-side, but server-side sanitization doesn't catch it. The server-side sanitization logic has been updated to sanitize against this attack. This vulnerability is fixed in 5.3.23.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Cross-site Scripting via insert media remote file oembed in silverstripe-asset-admin

Cross-site Scripting vulnerability with encoded payload in silverstripe/framework

Reports are still accessible even when `canView()` returns false in silverstripe/reports

Affected Vendor

silverstripe

View all reports →

Affected Software

silverstripe-framework

Vulnerable Versions:

< 5.3.23

Timeline

Official Publish: April 10th, 2025

Last Modified: April 10th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement