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Reachable 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).

"},{"base64":false,"type":"text/markdown","value":"Reachable 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)."}],"value":"Reachable 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)."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*","versionEndExcluding":"1.0.3","versionStartIncluding":"0.1.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"remediation developer","value":"Zach Daniel / Ash Project"},{"lang":"en","type":"coordinator","value":"Jonatan Männchen / EEF"},{"lang":"en","type":"finder","value":"Aaron Hong / Remedy"}],"dateAssigned":"2026-09-08T15:44:25.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

AshAi 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

Ash 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

The 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

This issue affects ash_ai: from 0.1.0 before 1.0.3.

"},{"base64":false,"type":"text/markdown","value":"AshAi 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."}],"value":"AshAi 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. 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