{"id":"EEF-CVE-2026-78230","summary":"AshAi aggregate tool can read field-policy-protected fields","details":"## Summary\n\nAshAi exposes Ash read actions to language-model tool calls. The read tool accepts an aggregate result type (`min`, `max`, `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 tool caller could therefore read a field the calling actor's field policies forbid by requesting it as an aggregate; `min`/`max` in particular return an actual field value. This includes fields that are `public? true` but restricted per-actor by a field policy, such as sensitive PII. The tool's existing check only required the field to be public, 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_ai: from 0.1.0 before 1.0.3.\n\n## Configurations\n\nReachable only when an application exposes an AshAi read tool over a resource whose field policies restrict a field that the calling actor can still name as an aggregate (for example a `public? true` but field-policy-protected attribute).","aliases":["CVE-2026-78230","GHSA-v5rw-36x5-r5vx"],"modified":"2026-09-08T16:56:02.977763136Z","published":"2026-09-08T16:41:45.975Z","database_specific":{"cwe_ids":["CWE-1220"],"capec_ids":["CAPEC-1"],"cpe_ids":["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash_ai/security/advisories/GHSA-v5rw-36x5-r5vx"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-78230.html"},{"type":"WEB","url":"https://github.com/ash-project/ash_ai/commit/2ba234b50946a3b8116190c8467f9f4dfa5edce7"},{"type":"FIX","url":"https://github.com/ash-project/ash_ai/commit/9c02de581625c342c9870a672830bff28c1d701e"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash_ai"}],"affected":[{"package":{"name":"ash_ai","ecosystem":"Hex","purl":"pkg:hex/ash_ai"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.0"},{"fixed":"1.0.3"}]}],"versions":["0.1.0","0.1.1","0.1.10","0.1.11","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.1.9","0.2.0","0.2.1","0.2.10","0.2.11","0.2.12","0.2.13","0.2.14","0.2.2","0.2.3","0.2.4","0.2.5","0.2.6","0.2.7","0.2.8","0.2.9","0.3.0","0.4.0","0.5.0","0.6.0","0.6.1","0.7.0","0.7.1","0.7.2","0.7.3","0.8.0","0.8.1","0.8.2","1.0.0","1.0.1","1.0.2"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-78230.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ash-project/ash_ai","events":[{"introduced":"2ba234b50946a3b8116190c8467f9f4dfa5edce7"},{"fixed":"9c02de581625c342c9870a672830bff28c1d701e"}]}],"versions":["v1.0.2","v1.0.1","v1.0.0","v0.8.2","v0.8.1","v0.8.0","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.1","v0.6.0","v0.5.0","v0.4.0","v0.3.0","v0.2.14","v0.2.13","v0.2.12","v0.2.11","v0.2.10","v0.2.9","v0.2.8","v0.2.7","v0.2.6","v0.2.5","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.1.11","v0.1.10","v0.1.9","v0.1.8","v0.1.7","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-2026-78230.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"}],"credits":[{"name":"Zach Daniel / Ash Project","type":"REMEDIATION_DEVELOPER"},{"name":"Jonatan Männchen / EEF","type":"COORDINATOR"},{"name":"Aaron Hong / Remedy","type":"FINDER"}]}