CVE-2026-70395

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.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-70395.html
https://github.com/ash-project/ash/commit/09f42593035bceb0f6153dd7ee45cc49d108300a
https://github.com/ash-project/ash/security/advisories/GHSA-vvp6-3wv6-833j
https://osv.dev/vulnerability/EEF-CVE-2026-70395

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-09 19:17

Updated : 2026-08-12 20:52

NVD link : CVE-2026-70395

Mitre link : CVE-2026-70395

CVE.ORG link : CVE-2026-70395

JSON object : View

Products Affected

No product.

CWE

CWE-943

Improper Neutralization of Special Elements in Data Query Logic

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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.\n\nThis issue affects ash: from 1.52.0-rc.11 before 3.31.1."}], "lastModified": "2026-08-12T20:52:13.783", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}