Cross-site scripting in Shopware - #VU131903
Published: May 20, 2026
Vulnerability identifier: #VU131903
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Shopware
Affected software:
Shopware
Shopware
Detailed vulnerability description
The vulnerability allows a remote attacker to execute malicious script in the victim's browser session.
The vulnerability exists due to cross-site scripting in the activeRouteParameters JavaScript variable in CMS components when handling crafted URLs at the /page/cms/* and /widget/cms/* endpoints. A remote attacker can inject malicious JavaScript code into a URL to execute malicious script in the victim's browser session.
User interaction is required to visit a crafted URL.
Remediation
Install security update from vendor's website.