AIKIDO-2026-69306
ash is vulnerable to Improper Input Validation
21
Low Risk
This Affects:
ashTL;DR
Ash.Type.apply_constraints/3 for a nested {:array, {:array, type}} value applies only the inner item constraints and never enforces the outer array constraints. Declared limits such as maximum length are ignored, and nil entries in the outer list are not handled, which can raise unhandled exceptions. This affects nested array attributes and arguments populated from external input. The fix enforces the outer constraints and handles nil entries for nested arrays.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you expose nested array ({:array, {:array, type}}) attributes or arguments with constraints.
Background info
ash is vulnerable to Improper Input Validation in versions 2.16.1 - 3.32.1.
How to fix this
Upgrade the ash library to the patch version.
Links
GitHub Release
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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