- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Modified
CVSS 3.1
- Type
- Primary
- Base score
- 3.5
- Impact score
- 1.4
- Exploitability score
- 2.1
- Vector string
- CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- Severity
- LOW
- security-advisories@github.com
- CWE-20
- nvd@nist.gov
- NVD-CWE-noinfo
- Hype score
- Not currently trending
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