High severityRubyInsecure DeserializationHIGH confidence
Marshal Load Untrusted
Untrusted input is passed to Marshal.load/Marshal.restore.
Standards mapping
- OWASP Top 10
- A08:2021 - Software and Data Integrity Failures
- OWASP ASVS
- V5.5.3 (L1)
Vulnerable vs. safe
Flagged by this check
Marshal.load(params[:blob])Passes - the safe pattern
Marshal.load(File.binread("cache/state.bin"))Why it matters & how to fix it
Untrusted input is passed to Marshal.load/Marshal.restore. Ruby Marshal deserialization instantiates arbitrary objects and enables remote code execution (CWE-502). Never Marshal.load attacker-controlled data; use a safe, structured format such as JSON.parse for external input.
References
Rule ID integsec-ruby-marshal-load-untrusted - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.
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