{"id":"EEF-CVE-2026-70395","summary":"Predicate injection in manage_relationship belongs_to lookup discloses secret lookup keys in Ash","details":"## Summary\n\nImproper 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.\n\n## Configurations\n\nA `belongs_to` relationship must be managed with `manage_relationship` using `on_lookup: :relate`, and the lookup value must come from client input.","aliases":["CVE-2026-70395","GHSA-vvp6-3wv6-833j"],"modified":"2026-09-08T23:30:03.666427457Z","published":"2026-08-09T18:17:07.321Z","database_specific":{"cwe_ids":["CWE-943"],"capec_ids":["CAPEC-116"],"cpe_ids":["cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash/security/advisories/GHSA-vvp6-3wv6-833j"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-70395.html"},{"type":"FIX","url":"https://github.com/ash-project/ash/commit/09f42593035bceb0f6153dd7ee45cc49d108300a"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash"}],"affected":[{"package":{"name":"ash","ecosystem":"Hex","purl":"pkg:hex/ash"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.52.0-rc.11"},{"fixed":"3.31.1"}]}],"versions":["1.52.0-rc.11","1.52.0-rc.12","1.52.0-rc.13","1.52.0-rc.14","1.52.0-rc.15","1.52.0-rc.16","1.52.0-rc.17","1.52.0-rc.18","1.52.0-rc.19","1.52.0-rc.20","1.52.0-rc.21","1.52.0-rc.22","1.53.0","1.53.2","1.53.3","2.0.0","2.0.0-pre.0","2.0.0-pre.1","2.0.0-pre.2","2.0.0-pre.3","2.0.0-pre.4","2.0.0-pre.5","2.0.0-pre.6","2.0.0-pre.7","2.0.0-pre.8","2.0.0-rc.0","2.0.0-rc.1","2.0.0-rc.10","2.0.0-rc.11","2.0.0-rc.12","2.0.0-rc.13","2.0.0-rc.14","2.0.0-rc.15","2.0.0-rc.2","2.0.0-rc.3","2.0.0-rc.4","2.0.0-rc.5","2.0.0-rc.6","2.0.0-rc.7","2.0.0-rc.8","2.0.0-rc.9","2.1.0","2.10.0","2.10.1","2.10.2","2.11.0","2.11.0-rc.0","2.11.0-rc.1","2.11.0-rc.2","2.11.0-rc.3","2.11.1","2.11.10","2.11.11","2.11.2","2.11.3","2.11.4","2.11.5","2.11.6","2.11.7","2.11.8","2.11.9","2.12.0","2.12.1","2.13.0","2.13.1","2.13.2","2.13.3","2.13.4","2.14.0","2.14.1","2.14.10","2.14.11","2.14.12","2.14.13","2.14.14","2.14.15","2.14.16","2.14.17","2.14.18","2.14.19","2.14.2","2.14.20","2.14.21","2.14.3","2.14.4","2.14.5","2.14.6","2.14.7","2.14.8","2.14.9","2.15.0","2.15.1","2.15.10","2.15.11","2.15.12","2.15.13","2.15.14","2.15.15","2.15.16","2.15.17","2.15.18","2.15.19","2.15.2","2.15.20","2.15.4","2.15.5","2.15.6","2.15.7","2.15.8","2.15.9","2.16.0","2.16.1","2.17.0","2.17.1","2.17.10","2.17.11","2.17.12","2.17.13","2.17.14","2.17.15","2.17.16","2.17.17","2.17.18","2.17.19","2.17.2","2.17.20","2.17.21","2.17.22","2.17.23","2.17.24","2.17.3","2.17.4","2.17.5","2.17.6","2.17.7","2.17.8","2.17.9","2.18.0","2.18.1","2.18.2","2.19.0","2.19.1","2.19.10","2.19.11","2.19.12","2.19.13","2.19.14","2.19.2","2.19.3","2.19.4","2.19.5","2.19.6","2.19.7","2.19.8","2.19.9","2.2.0","2.20.0","2.20.1","2.20.2","2.20.3","2.21.0","2.21.1","2.21.10","2.21.11","2.21.12","2.21.13","2.21.14","2.21.15","2.21.2","2.21.3","2.21.4","2.21.5","2.21.6","2.21.7","2.21.8","2.21.9","2.3.0","2.4.0","2.4.1","2.4.10","2.4.11","2.4.12","2.4.13","2.4.14","2.4.15","2.4.16","2.4.17","2.4.18","2.4.19","2.4.2","2.4.20","2.4.21","2.4.22","2.4.23","2.4.24","2.4.25","2.4.26","2.4.27","2.4.28","2.4.29","2.4.3","2.4.30","2.4.4","2.4.5","2.4.6","2.4.7","2.4.8","2.4.9","2.5.0","2.5.0-rc.0","2.5.0-rc.1","2.5.0-rc.2","2.5.0-rc.3","2.5.0-rc.4","2.5.0-rc.5","2.5.0-rc.6","2.5.1","2.5.10","2.5.11","2.5.12","2.5.13","2.5.14","2.5.15","2.5.16","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.10","2.6.11","2.6.13","2.6.14","2.6.15","2.6.16","2.6.17","2.6.18","2.6.19","2.6.2","2.6.20","2.6.21","2.6.22","2.6.23","2.6.24","2.6.25","2.6.26","2.6.27","2.6.28","2.6.29","2.6.3","2.6.30","2.6.31","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.6.9","2.7.0","2.7.1","2.8.0","2.8.1","2.9.0","2.9.1","2.9.10","2.9.11","2.9.12","2.9.13","2.9.14","2.9.15","2.9.16","2.9.17","2.9.18","2.9.19","2.9.2","2.9.20","2.9.21","2.9.22","2.9.23","2.9.24","2.9.25","2.9.26","2.9.27","2.9.28","2.9.29","2.9.3","2.9.4","2.9.5","2.9.6","2.9.7","2.9.8","2.9.9","3.0.0","3.0.0-rc.0","3.0.0-rc.1","3.0.0-rc.10","3.0.0-rc.11","3.0.0-rc.12","3.0.0-rc.13","3.0.0-rc.14","3.0.0-rc.15","3.0.0-rc.16","3.0.0-rc.17","3.0.0-rc.18","3.0.0-rc.19","3.0.0-rc.20","3.0.0-rc.21","3.0.0-rc.22","3.0.0-rc.23","3.0.0-rc.24","3.0.0-rc.25","3.0.0-rc.26","3.0.0-rc.27","3.0.0-rc.28","3.0.0-rc.29","3.0.0-rc.3","3.0.0-rc.31","3.0.0-rc.32","3.0.0-rc.33","3.0.0-rc.34","3.0.0-rc.35","3.0.0-rc.36","3.0.0-rc.37","3.0.0-rc.38","3.0.0-rc.39","3.0.0-rc.4","3.0.0-rc.40","3.0.0-rc.41","3.0.0-rc.42","3.0.0-rc.43","3.0.0-rc.44","3.0.0-rc.45","3.0.0-rc.46","3.0.0-rc.5","3.0.0-rc.6","3.0.0-rc.7","3.0.0-rc.8","3.0.0-rc.9","3.0.1","3.0.10","3.0.11","3.0.12","3.0.13","3.0.14","3.0.15","3.0.16","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.10.0","3.10.1","3.11.0","3.11.1","3.11.2","3.11.3","3.12.0","3.13.0","3.13.1","3.13.2","3.14.0","3.14.1","3.15.0","3.16.0","3.17.0","3.17.1","3.18.0","3.19.0","3.19.1","3.19.2","3.19.3","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.20.0","3.21.0","3.21.1","3.21.2","3.21.3","3.22.0","3.22.1","3.22.2","3.23.0","3.23.1","3.24.0","3.24.1","3.24.2","3.24.3","3.24.4","3.24.5","3.24.6","3.24.7","3.25.0","3.25.1","3.25.2","3.26.0","3.27.0","3.27.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