{"id":"EEF-CVE-2026-82586","summary":"AshLua read operation aggregate bypasses the exposed-field allow-list, exposing private attributes","details":"## Summary\n\nImproper Protection of Alternate Path vulnerability in ash-project ash_lua allows a user-supplied Lua script to read attributes that are not on the exposed-field allow-list.\n\nAshLua exposes Ash resources to Lua scripts, gated by a manifest declaring which fields are exposed. The `read` action's `operation` aggregate path in `AshLua.Runtime` took the field name straight from the Lua call and resolved it with only `String.to_existing_atom` and `Ash.Query.Aggregate.new!`, neither of which consults the exposed-field allow-list the normal `fields` path enforces. A script can therefore read the value of any attribute of any record the actor may read, including private `sensitive?: true` columns, via `resource.read({ operation = {\"list\", \"hashed_password\"} })`; `min` and `max` give a value oracle. Anyone able to submit or influence a Lua script can reach this.\n\nThis issue affects ash_lua: from 0.1.0 before 0.2.1.\n\n## Configurations\n\nReachable only when an application exposes AshLua scripting (the `AshLua.Resource` / `AshLua.Domain` extensions) to callers who can submit or influence Lua scripts, and the exposed resource has attributes that are not on the exposed-field surface.","aliases":["CVE-2026-82586","GHSA-37jv-wc37-fhcw"],"modified":"2026-09-08T22:45:03.311828822Z","published":"2026-09-07T22:34:14.837Z","database_specific":{"capec_ids":["CAPEC-554"],"cpe_ids":["cpe:2.3:a:ash-project:ash_lua:*:*:*:*:*:*:*:*"],"cwe_ids":["CWE-424"]},"references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-82586.html"},{"type":"FIX","url":"https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash_lua"}],"affected":[{"package":{"name":"ash_lua","ecosystem":"Hex","purl":"pkg:hex/ash_lua"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.0"},{"fixed":"0.2.1"}]}],"versions":["0.1.0","0.1.1","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.2.0"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-82586.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ash-project/ash_lua","events":[{"introduced":"8675e47cca81f36594083a7e63379bac9e123e72"},{"fixed":"c0dfcd9494766d548178c37df0bd01cff378e1c7"}]}],"versions":["v0.2.0","v0.1.6","v0.1.5","v0.1.4","v0.1.3","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-82586.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}],"credits":[{"name":"Peter Ullrich","type":"FINDER"},{"name":"Peter Ullrich","type":"REPORTER"},{"name":"Zach Daniel / Ash Project","type":"REMEDIATION_DEVELOPER"},{"name":"Jonatan Männchen / EEF","type":"COORDINATOR"}]}