CVE-2026-54720: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in silverstripe silverstripe-framework
Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In versions prior to 6.2.2, the "Insert media from web" functionality in the CMS is vulnerable to XSS from a specially crafted embed. This issue was fixed in version 6.2.2/
AI Analysis
Technical Summary
CVE-2026-54720 is a CWE-79 (Improper Neutralization of Input During Web Page Generation) vulnerability affecting Silverstripe Framework, a PHP framework used by Silverstripe CMS. The vulnerability exists in versions before 6.2.2 within the "Insert media from web" functionality, where insufficient input sanitization allows cross-site scripting via crafted embed content. This can lead to limited confidentiality and integrity impacts due to script injection. The vulnerability was resolved in version 6.2.2.
Potential Impact
An attacker can exploit this vulnerability to execute arbitrary scripts in the context of the affected web application, potentially leading to limited information disclosure or manipulation of user interactions. The CVSS vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and low impact on confidentiality and integrity with no impact on availability.
Mitigation Recommendations
Upgrade Silverstripe Framework to version 6.2.2 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are documented. Patch status is confirmed by the vendor advisory stating the fix in 6.2.2.
CVE-2026-54720: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in silverstripe silverstripe-framework
Description
Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In versions prior to 6.2.2, the "Insert media from web" functionality in the CMS is vulnerable to XSS from a specially crafted embed. This issue was fixed in version 6.2.2/
CVSS v3.1
Score 5.4medium
Affected software
pkg:composer/silverstripe/silverstripe-frameworkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54720 is a CWE-79 (Improper Neutralization of Input During Web Page Generation) vulnerability affecting Silverstripe Framework, a PHP framework used by Silverstripe CMS. The vulnerability exists in versions before 6.2.2 within the "Insert media from web" functionality, where insufficient input sanitization allows cross-site scripting via crafted embed content. This can lead to limited confidentiality and integrity impacts due to script injection. The vulnerability was resolved in version 6.2.2.
Potential Impact
An attacker can exploit this vulnerability to execute arbitrary scripts in the context of the affected web application, potentially leading to limited information disclosure or manipulation of user interactions. The CVSS vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and low impact on confidentiality and integrity with no impact on availability.
Mitigation Recommendations
Upgrade Silverstripe Framework to version 6.2.2 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are documented. Patch status is confirmed by the vendor advisory stating the fix in 6.2.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T23:07:33.231Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a45818a27e9c7971923a34d
Added to database: 07/01/2026, 21:07:22 UTC
Last enriched: 07/09/2026, 09:19:17 UTC
Last updated: 08/15/2026, 02:31:43 UTC
Views: 79
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