{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70395", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-04T14:30:01.369Z", "datePublished": "2026-08-09T18:17:07.321Z", "dateUpdated": "2026-08-09T18:17:07.321Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Ash.Actions.ManagedRelationships'", "'Elixir.Ash.Changeset'"], "packageName": "ash", "packageURL": "pkg:hex/ash", "product": "ash", "programFiles": ["lib/ash/actions/managed_relationships.ex", "lib/ash/changeset/changeset.ex"], "programRoutines": [{"name": "'Elixir.Ash.Actions.ManagedRelationships':setup_managed_belongs_to_relationships/3"}, {"name": "'Elixir.Ash.Changeset':manage_relationship/4"}], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "versions": [{"lessThan": "3.31.1", "status": "affected", "version": "1.52.0-rc.11", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.Ash.Actions.ManagedRelationships'", "'Elixir.Ash.Changeset'"], "packageName": "ash-project/ash", "packageURL": "pkg:github/ash-project/ash", "product": "ash", "programFiles": ["lib/ash/actions/managed_relationships.ex", "lib/ash/changeset/changeset.ex"], "programRoutines": [{"name": "'Elixir.Ash.Actions.ManagedRelationships':setup_managed_belongs_to_relationships/3"}, {"name": "'Elixir.Ash.Changeset':manage_relationship/4"}], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "versions": [{"lessThan": "09f42593035bceb0f6153dd7ee45cc49d108300a", "status": "affected", "version": "571c138140e71cea24005189f45d7a63c8d2ed20", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A <code>belongs_to</code> relationship must be managed with <code>manage_relationship</code> using <code>on_lookup: :relate</code>, and the lookup value must come from client input.</p>"}, {"base64": false, "type": "text/markdown", "value": "A `belongs_to` relationship must be managed with `manage_relationship` using `on_lookup: :relate`, and the lookup value must come from client input."}], "value": "A belongs_to relationship must be managed with manage_relationship using on_lookup: :relate, and the lookup value must come from client input."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.31.1", "versionStartIncluding": "1.52.0-rc.11", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Jisung Chae"}, {"lang": "en", "type": "remediation developer", "value": "Zach Daniel"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen / EEF"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>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.</p>\n<p>When <code>manage_relationship</code> is used with <code>on_lookup: :relate</code> on a <code>belongs_to</code> relationship, the client-supplied lookup value is passed to <code>Ash.Query.filter/2</code> 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 <code>Ash.Query.limit(1)</code>, leaving <code>Ash.read_one/2</code> 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.</p>\n<p>This issue affects ash: from 1.52.0-rc.11 before 3.31.1.</p>"}, {"base64": false, "type": "text/markdown", "value": "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.\n\nWhen `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.\n\nThis issue affects ash: from 1.52.0-rc.11 before 3.31.1."}], "value": "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.\n\nWhen 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.\n\nThis issue affects ash: from 1.52.0-rc.11 before 3.31.1."}], "impacts": [{"capecId": "CAPEC-116", "descriptions": [{"lang": "en", "value": "CAPEC-116 Excavation"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "baseScore": 2.1, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-943", "description": "CWE-943 Improper Neutralization of Special Elements in Data Query Logic", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-09T18:17:07.321Z"}, "references": [{"tags": ["related", "vendor-advisory"], "url": "https://github.com/ash-project/ash/security/advisories/GHSA-vvp6-3wv6-833j"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-70395.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-70395"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash/commit/09f42593035bceb0f6153dd7ee45cc49d108300a"}], "source": {"discovery": "EXTERNAL"}, "title": "Predicate injection in manage_relationship belongs_to lookup discloses secret lookup keys in Ash"}}}

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