Intel

AIKIDO-2026-185251

ash_graphql is vulnerable to Improper Authorization

Improper AuthorizationCVE-2026-81643 Published Yesterday

23

Low Risk

This Affects:

ELIXIRash_graphql
1.4.0 - 1.10.1
Fixed in 1.11.0
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TL;DR

In AshGraphql.Subscription.Batcher, the do_send/5 function applies the should_send?/1 authorization filter only to the first notification in each batch. Subsequent batched notifications are re-published as already-resolved results without the forbidden/not-found filtering. Subscribers can therefore receive payloads for records they are not authorized to see, revealing record existence and change timing. The fix applies the authorization filter to every notification in a batch.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and you use GraphQL subscriptions.

Background info

ash_graphql is vulnerable to Improper Authorization in versions 1.4.0 - 1.10.1.

How to fix this

Upgrade the ash_graphql library to the patch version.

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