---
id: CVE-2026-70395
title: >-
  Improper Neutralization of Special Elements in Data Query Logic vulnerability
  in ash-project ash allows an attacker to forge a relationship to a record they
  cannot name, and to recover the secret value used to look it up.


  When manage_re…
summary: >-
  Improper Neutralization of Special Elements in Data Query Logic vulnerability
  in ash-project ash allows an attacker to forge a relationship to a record they
  cannot name, and to recover the secret value used to look it up.


  When manage_re…
severity: none
cwe:
  - CWE-943
published: '2026-08-09'
updated: '2026-08-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70395'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-70395.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/ash-project/ash/commit/09f42593035bceb0f6153dd7ee45cc49d108300a
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://github.com/ash-project/ash/security/advisories/GHSA-vvp6-3wv6-833j'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-70395'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
tags:
  - nvd
ingestedAt: '2026-08-10T04:38:56.316Z'
epss: 0.00197
epssPercentile: 0.08362
---

## Overview

Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash allows an attacker to forge a relationship to a record they cannot name, and to recover the secret value used to look it up.

When manage_relationship is used with on_lookup: :relate on a belongs_to relationship, the client-supplied lookup value is passed to Ash.Query.filter/2 without being cast to the attribute type. A nested map submitted where a scalar is expected is therefore interpreted as a filter predicate rather than a literal, so a lookup for a specific record becomes a query for any record matching a condition. The same path omits Ash.Query.limit(1), leaving Ash.read_one/2 able to distinguish no match from one match from several, which turns comparison predicates into an oracle for the lookup value. Authorization is unaffected; the destination read policy still applies.

This issue affects ash: from 1.52.0-rc.11 before 3.31.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.