CVE-2026-54717: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in silverstripe silverstripe-cms
Silverstripe CMS versions prior to 6.2.1 have a cross-site scripting (XSS) vulnerability in the page breadcrumbs feature within the CMS page list view. This occurs because page titles are rendered into the breadcrumb trail without proper escaping. The vulnerability allows an attacker to inject malicious scripts that execute when the breadcrumb trail is viewed. The issue is fixed in version 6.2.1.
AI Analysis
Technical Summary
CVE-2026-54717 describes a cross-site scripting (CWE-79) vulnerability in Silverstripe CMS where page breadcrumbs in the CMS page list view do not properly escape page titles before rendering. This improper neutralization of input during web page generation allows an attacker to inject and execute arbitrary scripts. The vulnerability affects versions prior to 6.2.1 and is resolved in 6.2.1.
Potential Impact
An attacker can exploit this vulnerability by injecting malicious scripts into page titles, which are then executed in the context of the CMS user viewing the page list. This can lead to limited confidentiality and integrity impacts such as theft of session tokens or manipulation of the user interface. The CVSS score is 5.4 (medium severity), indicating a moderate risk with network attack vector, low attack complexity, no privileges required, user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade Silverstripe CMS to version 6.2.1 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory stating the issue is fixed in 6.2.1.
CVE-2026-54717: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in silverstripe silverstripe-cms
Description
Silverstripe CMS versions prior to 6.2.1 have a cross-site scripting (XSS) vulnerability in the page breadcrumbs feature within the CMS page list view. This occurs because page titles are rendered into the breadcrumb trail without proper escaping. The vulnerability allows an attacker to inject malicious scripts that execute when the breadcrumb trail is viewed. The issue is fixed in version 6.2.1.
CVSS v3.1
Score 5.4medium
Affected software
pkg:github/silverstripe/silverstripe-cmsRun 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-2026-54717 describes a cross-site scripting (CWE-79) vulnerability in Silverstripe CMS where page breadcrumbs in the CMS page list view do not properly escape page titles before rendering. This improper neutralization of input during web page generation allows an attacker to inject and execute arbitrary scripts. The vulnerability affects versions prior to 6.2.1 and is resolved in 6.2.1.
Potential Impact
An attacker can exploit this vulnerability by injecting malicious scripts into page titles, which are then executed in the context of the CMS user viewing the page list. This can lead to limited confidentiality and integrity impacts such as theft of session tokens or manipulation of the user interface. The CVSS score is 5.4 (medium severity), indicating a moderate risk with network attack vector, low attack complexity, no privileges required, user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Upgrade Silverstripe CMS to version 6.2.1 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory stating the issue is fixed in 6.2.1.
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: 6a750706bf8831d5395f5aa8
Added to database: 08/06/2026, 22:13:26 UTC
Last enriched: 08/06/2026, 22:57:54 UTC
Last updated: 08/06/2026, 23:21:13 UTC
Views: 2
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