{"id":"CVE-2026-78216","summary":"AshLua eval read operations can read field-policy-protected fields via aggregates","details":"AshLua 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.","aliases":["EEF-CVE-2026-78216","GHSA-5whv-8rcp-x33j"],"modified":"2026-09-10T03:48:33.262984546Z","published":"2026-09-08T16:42:20.908Z","database_specific":{"cwe_ids":["CWE-1220"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78216.json","unresolved_ranges":[{"extracted_events":[{"introduced":"0.1.0"},{"fixed":"0.2.2"},{"introduced":"8675e47cca81f36594083a7e63379bac9e123e72"},{"fixed":"266a5dcc56d5015b6d316c10606169e753b07450"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"0.1.0"},{"fixed":"0.2.2"}],"source":"CPE_FIELD"},{"source":"DESCRIPTION","extracted_events":[{"introduced":"0.1.0"},{"fixed":"0.2.2"}]}],"cna_assigner":"EEF"},"references":[{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-78216.html"},{"type":"WEB","url":"https://github.com"},{"type":"WEB","url":"https://osv.dev/vulnerability/EEF-CVE-2026-78216"},{"type":"WEB","url":"https://repo.hex.pm"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78216.json"},{"type":"ADVISORY","url":"https://github.com/ash-project/ash_lua/security/advisories/GHSA-5whv-8rcp-x33j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78216"},{"type":"FIX","url":"https://github.com/ash-project/ash_lua/commit/266a5dcc56d5015b6d316c10606169e753b07450"},{"type":"FIX","url":"https://github.com/ash-project/ash_lua/commit/8675e47cca81f36594083a7e63379bac9e123e72"},{"type":"PACKAGE","url":"https://github.com/ash-project/ash_lua"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ash-project/ash_lua","events":[{"introduced":"0"},{"fixed":"266a5dcc56d5015b6d316c10606169e753b07450"},{"fixed":"8675e47cca81f36594083a7e63379bac9e123e72"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v0.2.1","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://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78216.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}