CVE-2026-82742

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.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-82742.html
https://github.com/ash-project/ash/commit/da07f009e889819ec410fa1f0f12534bfb9e21dd
https://github.com/ash-project/ash/security/advisories/GHSA-mgwj-c69v-6f83
https://osv.dev/vulnerability/EEF-CVE-2026-82742

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 04:18

Updated : 2026-09-01 21:15

NVD link : CVE-2026-82742

Mitre link : CVE-2026-82742

CVE.ORG link : CVE-2026-82742

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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