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CVE PROGRAM SOURCE RECORD2.1 Low

CVE-2026-82740

Ash.Type ignores outer array constraints on nested {:array, {:array, type}} inputs

Description

Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation. Ash.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs. This issue affects ash: from 2.16.1 before 3.32.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ash-project ash

Default version status: unaffected

  • 2.16.1 to < 3.32.2affected
pkg:hex/ash

ash-project ash

Default version status: unaffected

  • 7b50a401d85018371659e51c34c89d7e1d0c2ac9 to < c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ceaffected
pkg:github/ash-project/ash

References