Medium severityRubyCryptographyHIGH confidence
Weak Hash MD5 SHA1
A cryptographically weak hash (MD5 or SHA-1) is used.
Standards mapping
- OWASP Top 10
- A02:2021 - Cryptographic Failures
- OWASP ASVS
- V6.2.1 (L2)
Vulnerable vs. safe
Flagged by this check
digest = Digest::MD5.hexdigest(data)Passes - the safe pattern
digest = Digest::SHA256.hexdigest(data)Why it matters & how to fix it
A cryptographically weak hash (MD5 or SHA-1) is used. These are broken against collision/preimage attacks and unsuitable for security (CWE-327). Use SHA-256 or SHA-3 for integrity, and a memory-hard password hash (bcrypt/scrypt/argon2) for credentials.
References
Rule ID integsec-ruby-weak-hash-md5-sha1 - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.
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