CVE-2025-30148: Silverstripe Framework has a XSS vulnerability in HTML editor
First published: Thu Apr 10 2025(Updated: )
### Impact A 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 sanitised on the client-side, but server-side sanitisation doesn't catch it. The server-side sanitisation logic has been updated to sanitise against this attack. ### Reported by James Nicoll from Fujitsu Cyber ### References - https://www.silverstripe.org/download/security-releases/cve-2025-30148
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Silverstripe Framework | <5.3.23 | |
| composer/silverstripe/framework | <5.3.23 | 5.3.23 |
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Reference Links
- https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-rhx4-hvx9-j387
- https://github.com/silverstripe/silverstripe-framework/commit/e99cfd62d160d145a76fcf9631e6b11226e42358
- https://www.silverstripe.org/download/security-releases/cve-2025-30148
- https://github.com/silverstripe/silverstripe-framework/pull/11682
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2025-30148.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2025-30148
- https://github.com/advisories/GHSA-rhx4-hvx9-j387 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2025-30148?
CVE-2025-30148 is classified as a high severity vulnerability due to its potential for JavaScript injection.
How do I fix CVE-2025-30148?
To mitigate CVE-2025-30148, upgrade the Silverstripe Framework to version 5.3.23 or later immediately.
Who is affected by CVE-2025-30148?
Any user of the Silverstripe Framework prior to version 5.3.23 is vulnerable to CVE-2025-30148.
What type of vulnerability is CVE-2025-30148?
CVE-2025-30148 is a web application vulnerability that allows for cross-site scripting (XSS) via script injection.
What action can bad actors take using CVE-2025-30148?
Bad actors can leverage CVE-2025-30148 to execute malicious JavaScript on the front end of websites utilizing the vulnerable Silverstripe Framework.
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