CVE-2026-82740

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.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-82740.html
https://github.com/ash-project/ash/commit/c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce
https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc
https://osv.dev/vulnerability/EEF-CVE-2026-82740
https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 04:18

Updated : 2026-09-01 21:15

NVD link : CVE-2026-82740

Mitre link : CVE-2026-82740

CVE.ORG link : CVE-2026-82740

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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