CVE-2026-90882 Reflected arbitrary origins with credentials, allowing cross-origin reads of authenticated user data

The open-vsx.org deployment returned Access-Control-Allow-Origin reflecting the requesting origin together with Access-Control-Allow-Credentials: true on the authenticated /user/ endpoints. A page on any origin could therefore issue credentialed requests to the service in a logged-in user's brows...

CVE-2026-90882 Reflected arbitrary origins with credentials, allowing cross-origin reads of authenticated user data

The open-vsx.org deployment returned Access-Control-Allow-Origin reflecting the requesting origin together with Access-Control-Allow-Credentials: true on the authenticated /user/ endpoints. A page on any origin could therefore issue credentialed requests to the service in a logged-in user's brows...