CVE-2026-78230
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. 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. 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. This issue affects ash_ai: from 0.1.0 before 1.0.3.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Hex | ash_ai | >=0.1.0,<1.0.3 | 1.0.3 |
References
- 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
- https://hex.pm/packages/ash_ai
CWEs
CWE-1220
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.