Input validation error in Shopware - CVE-2026-48012
Published: May 20, 2026
Vulnerability identifier: #VU131950
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-48012
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect users to an arbitrary URL.
The vulnerability exists due to improper input validation in the GET /api/oauth/sso/auth endpoint when handling requests without the expected SSO session state. A remote attacker can supply a crafted Referer header to redirect users to an arbitrary URL.
User interaction is required, and the endpoint also reflects the attacker-controlled target into the Location header and the HTML redirect body, including dangerous schemes such as javascript:.
Affected software
Shopware
How to mitigate CVE-2026-48012
Install security update from vendor's website.
Shopware - update to 6.7.10.1