CVE-2026-81643
Description
Incorrect Authorization vulnerability in ash-project ash_graphql delivers GraphQL subscription payloads for records a subscriber is not authorized to see. In AshGraphql.Subscription.Batcher, do_send/5 resolves the first notification of a batch and filters it with should_send?/1, which drops results whose errors are coded forbidden or not_found or carry no code, precisely so that unauthorized results are not disclosed. The remaining notifications in the batch are read from the process dictionary, re-run through the pipeline, and appended to the outgoing results without that filter. They reach pubsub.publish_subscription/2, and the not is_nil(record) guard drops only nil records, not error-carrying results. Any two qualifying notifications arriving within the default one-second batch interval suffice, and batching is the default path. The fix applies should_send?/1 to the whole batch. This issue affects ash_graphql: from 1.4.0 before 1.11.0.
How to fix
- ash-project ash_graphql1.11.0, e8e67f39add2ce0771e6db5f086afe68ba212c57 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ash-project ash_graphql | 1.4.0 ≤ v < 1.11.0, 3cb2c9870d050c7c4bba6c211aaed97d732f7e81 ≤ v < e8e67f39add2ce0771e6db5f086afe68ba212c57 | 1.11.0, e8e67f39add2ce0771e6db5f086afe68ba212c57 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.