Description (CNA)
Uncontrolled Resource Consumption vulnerability in ash-project ash lets an attacker exhaust node memory by matching a filter that spans multiple to-many relationships in memory. Ash.Filter.Runtime matches a filter against an in-memory record by first expanding the record into combinations of its related rows. flatten_relationships/2 (lib/ash/filter/runtime.ex) eagerly built the full Cartesian product across the filter's to-many relationship paths, so a record with K to-many relationships of M rows each materialized on the order of M^K scenarios before any predicate was checked. A filter or dataset that reaches several sizeable to-many relationships therefore allocates memory combinatorially and can exhaust the node. The fix streams the expansion lazily and short-circuits on the first matching scenario, bounding the work. This issue affects ash: from 1.29.0-rc0 before 3.32.2.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ash-project / ash | affected 1.29.0-rc0 before 3.32.2 |
| ash-project / ash | affected f6f5d194bfc7802bd32e48bf2eabd2d97a0109a4 before da07f009e889819ec410fa1f0f12534bfb9e21dd |
CWE
CWE-400
References
- https://github.com/ash-project/ash/security/advisories/GHSA-mgwj-c69v-6f83
- https://cna.erlef.org/cves/CVE-2026-82742.html
- https://osv.dev/vulnerability/EEF-CVE-2026-82742
- https://github.com/ash-project/ash/commit/da07f009e889819ec410fa1f0f12534bfb9e21dd
ADP enrichment
No English description supplied.
No references supplied.