---
id: CVE-2026-78230
title: AshAi exposes Ash read actions to language-model tool calls
summary: >-
  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 …
severity: medium
cvss: 6
cvssVector: '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'
cwe:
  - CWE-1220
vendor: ash-project
product: ash_ai
affected:
  - ash_ai >= 0.1.0 < 1.0.3
  - >-
    ash-project/ash_ai >= 2ba234b50946a3b8116190c8467f9f4dfa5edce7 <
    9c02de581625c342c9870a672830bff28c1d701e
published: '2026-09-08'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:29:09.680'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78230'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-78230.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/ash-project/ash_ai/commit/2ba234b50946a3b8116190c8467f9f4dfa5edce7
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/ash-project/ash_ai/commit/9c02de581625c342c9870a672830bff28c1d701e
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/ash-project/ash_ai/security/advisories/GHSA-v5rw-36x5-r5vx
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-78230'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T17:33:49.017554Z'
cvssSource: cna
ingestedAt: '2026-09-08T19:08:49.600Z'
epss: 0.00427
epssPercentile: 0.34369
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.