Medium severityPythonSensitive Data ExposureMEDIUM confidence
Sensitive Data Cleartext Cookie
Sensitive data (a secret or PII/PHI) is written to a cookie in cleartext (CWE-312).
Standards mapping
- OWASP Top 10
- A02:2021 - Cryptographic Failures
- OWASP ASVS
- V8.3.4 (L2)V8.1.1 (L2)
Vulnerable vs. safe
Flagged by this check
resp.set_cookie("user_password", pw)Passes - the safe pattern
resp.set_cookie("theme", "dark")Why it matters & how to fix it
Sensitive data (a secret or PII/PHI) is written to a cookie in cleartext (CWE-312). Cookies are stored client-side and sent on every request. Keep sensitive state server-side and reference it by an opaque session token, or encrypt/sign the value if it must be client-stored.
References
Rule ID integsec-python-sensitive-data-cleartext-cookie - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.
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Start a pentestRelated checks
- JavaScript / TypeScript - Sensitive Data ExposureError Stack In Response
- JavaScript / TypeScript - Sensitive Data ExposurePII PHI In Logs
- JavaScript / TypeScript - Sensitive Data ExposureSecret In Logs
- JavaScript / TypeScript - Sensitive Data ExposureSensitive Data Client Storage
- JavaScript / TypeScript - Sensitive Data ExposureSensitive Data In URL Query
- Python - Sensitive Data ExposureFlask Traceback In Response