CVE-2026-78230
Severity CVSS v4.0:
MEDIUM
Type:
Unavailable / Other
Publication date:
08/09/2026
Last modified:
08/09/2026
Description
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.<br />
<br />
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&#39;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&#39;s existing check only required the field to be public, which is a separate axis from per-actor field-policy authorization.<br />
<br />
The fix authorizes the aggregated field against the resource&#39;s field policies, so aggregating over a field the actor may not see is refused or scoped to the rows where it is visible.<br />
<br />
This issue affects ash_ai: from 0.1.0 before 1.0.3.
Impact
Base Score 4.0
6.00
Severity 4.0
MEDIUM
References to Advisories, Solutions, and Tools
- https://cna.erlef.org/cves/CVE-2026-78230.html
- https://github.com/ash-project/ash_ai/commit/2ba234b50946a3b8116190c8467f9f4dfa5edce7
- https://github.com/ash-project/ash_ai/commit/9c02de581625c342c9870a672830bff28c1d701e
- https://github.com/ash-project/ash_ai/security/advisories/GHSA-v5rw-36x5-r5vx
- https://osv.dev/vulnerability/EEF-CVE-2026-78230