CVE-2023-23934

Werkzeug is a comprehensive WSGI web application library. Browsers may allow "nameless" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.
Configurations

Configuration 1

cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*

Information

Published : 2023-02-14 08:15

Updated : 2023-02-23 10:31


NVD link : CVE-2023-23934

Mitre link : CVE-2023-23934

Products Affected
CWE
No CWE.