CWE-525: Use of Web Browser Cache Containing Sensitive Information

MITRE CWE weakness

Description

The web application does not use an appropriate caching policy that specifies the extent to which each web page and associated form fields should be cached.

Common consequences

• Confidentiality: Read Application Data

Mitigations

Architecture and Design — Protect information stored in cache.

Implementation — Use a restrictive caching policy for forms and web pages that potentially contain sensitive information, such as "no-cache" in the Cache-Control header.

Architecture and Design — Do not store unnecessarily sensitive information in the cache.

Architecture and Design — Consider using encryption in the cache.

References

• CWE page: https://cwe.mitre.org/data/definitions/525.html
• CWE list: https://cwe.mitre.org/data/index.html