CWE-1004 - Sensitive Cookie Without 'HttpOnly' Flag
- Abstraction:Variant
- Structure:Simple
- Status:Incomplete
- Release Date:2017-01-19
- Latest Modification Date:2026-04-30
Weakness Name
Sensitive Cookie Without 'HttpOnly' Flag
Description
The product uses a cookie to store sensitive information, but the cookie is not marked with the HttpOnly flag.
Common Consequences
Scope: Confidentiality
Impact: Read Application Data
Notes: If the HttpOnly flag is not set, then sensitive information stored in the cookie may be exposed to unintended parties.
Scope: Integrity
Impact: Gain Privileges or Assume Identity
Notes: If the cookie in question is an authentication cookie, then not setting the HttpOnly flag may allow an adversary to steal authentication data (e.g., a session ID) and assume the identity of the user.