{"affected":[{"package":{"ecosystem":"Hex","name":"ash_lua","purl":"pkg:hex/ash_lua"},"ranges":[{"events":[{"introduced":"0.1.0"},{"fixed":"0.2.2"}],"type":"SEMVER"}],"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","0.2.1"]},{"ranges":[{"events":[{"introduced":"8675e47cca81f36594083a7e63379bac9e123e72"},{"fixed":"266a5dcc56d5015b6d316c10606169e753b07450"}],"repo":"https://github.com/ash-project/ash_lua","type":"GIT"}]}],"aliases":["GHSA-5whv-8rcp-x33j","CVE-2026-78216"],"credits":[{"name":"Zach Daniel / Ash Project","type":"REMEDIATION_DEVELOPER"},{"name":"Jonatan Männchen / EEF","type":"COORDINATOR"},{"name":"Aaron Hong / Remedy","type":"FINDER"}],"database_specific":{"capec_ids":["CAPEC-1"],"cpe_ids":["cpe:2.3:a:ash-project:ash_lua:*:*:*:*:*:*:*:*"],"cwe_ids":["CWE-1220"]},"details":"## Summary\n\nAshLua exposes Ash read actions to Lua scripts run through an `eval` action. A read call accepts an `operation` (`list`, `min`, `max`, `first`, `sum`, `avg`) that builds an ad-hoc `Ash.Query.Aggregate` over a named field and returns its raw value.\n\nAsh field policies redact forbidden fields on returned records (replacing them with `%Ash.ForbiddenField{}`), but that redaction does not apply to aggregate values. A script could therefore read a field the calling actor's field policies forbid by requesting it as an aggregate instead of as a field. This includes fields that are `public? true` but restricted per-actor by a field policy, such as sensitive PII. The prior hardening only enforced the exposed-field allow-list (field visibility), which is a separate axis from per-actor field-policy authorization.\n\nThe fix authorizes the aggregated field against the resource's field policies, so aggregating over a field the actor may not see is refused or scoped to the rows where it is visible.\n\nThis issue affects ash_lua: from 0.1.0 before 0.2.2.\n\n## Configurations\n\nReachable only when an application exposes an AshLua `eval` action over a resource whose field policies restrict a field that the calling actor can still name as an operation aggregate (for example a `public? true` but field-policy-protected attribute).","id":"EEF-CVE-2026-78216","modified":"2026-09-08T16:42:21.335248Z","published":"2026-09-08T16:42:20.908Z","references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash_lua/security/advisories/GHSA-5whv-8rcp-x33j"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-78216.html"},{"type":"WEB","url":"https://github.com/ash-project/ash_lua/commit/8675e47cca81f36594083a7e63379bac9e123e72"},{"type":"FIX","url":"https://github.com/ash-project/ash_lua/commit/266a5dcc56d5015b6d316c10606169e753b07450"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash_lua"}],"related":[],"schema_version":"1.7.3","severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"}],"summary":"AshLua eval read operations can read field-policy-protected fields via aggregates","upstream":[]}