ash-project ash up to 3.32.1 Aggregate aggregate.ex improper authorization

Summaryinfo

A vulnerability described as problematic has been identified in ash-project ash up to 3.32.1. Affected is an unknown function of the file lib/ash/actions/aggregate.ex of the component Aggregate. Executing a manipulation can lead to improper authorization. This vulnerability appears as CVE-2026-82748. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in ash-project ash up to 3.32.1. It has been declared as problematic. This vulnerability affects an unknown code block of the file lib/ash/actions/aggregate.ex of the component Aggregate. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality. CVE summarizes:

Incorrect Authorization vulnerability in ash-project ash authorizes an aggregate under one read action while computing it under another, so an aggregate can run with policies that do not match the action it was authorized against. Ash.Actions.Aggregate groups aggregates by their {authorize?, read_action} and authorizes each group under that read action, but when building the data query it selected the action as opts[:action] || read_action || <primary read> (lib/ash/actions/aggregate.ex). When a caller passed an :action option, the aggregate query ran under that action while authorization had been computed for the group's own read_action. If the run action's read policies are more permissive than the authorized one, the aggregate (a count or sum) is computed over records the authorized action's policies would have excluded, disclosing information about data the actor cannot read. The fix runs the aggregate under the same read_action it is authorized against. This issue affects ash: from 3.5.13 before 3.32.2.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-82748 since 08/31/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 3.32.2 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• ash-project

Name

• ash

Version

• 3.32.0
• 3.32.1

Website

• Product: https://github.com/ash-project/ash/

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