AIKIDO-2026-31514
activemodel is vulnerable to Denial of Service (DoS)
53
Medium Risk
This Affects:
activemodelTL;DR
ActiveModel::Type::Integer casts arbitrarily long numeric strings without bounding their size before conversion, so a single oversized string parameter drives disproportionate CPU work during casting. Any attribute typed as an integer that receives untrusted input can trigger this cost on every request that sets the attribute. The fix bounds the string length accepted for integer casting so oversized values are rejected instead of processed.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
activemodel is vulnerable to Denial of Service (DoS) in versions 3.0.0 - 8.1.3.1.
How to fix this
Upgrade the activemodel and/or the rails library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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