Node memory exhaustion via eager relationship cross-product
Published Sep 1, 2026 · Updated Sep 1, 2026
Uncontrolled resource consumption in Ash 1.29.0-rc0 through 3.32.1 allows attackers to exhaust node memory via complex filters. Ash.Filter.Runtime's flatten_relationships/2 eagerly materializes the full Cartesian product of rows across every to-many relationship before evaluating predicates. Exploitation requires an application path that evaluates attacker-influenced in-memory filters across several sizable relationships, and memory exhaustion interrupts the node.
Summary
What happened
Uncontrolled resource consumption in Ash 1.29.0-rc0 through 3.32.1 allows attackers to exhaust node memory via complex filters. Ash.Filter.Runtime's flatten_relationships/2 eagerly materializes the full Cartesian product of rows across every to-many relationship before evaluating predicates. Exploitation requires an application path that evaluates attacker-influenced in-memory filters across several sizable relationships, and memory exhaustion interrupts the node.
The record
- CVE
- CVE-2026-82742
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Vendor
- Ash Framework
- Product
- Ash
- Classifications
- CWE-400, CAPEC-130, T1499.003
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.29.0-rc0 <3.32.2
- Affected versionversion=f6f5d194bfc7802bd32e48bf2eabd2d97a0109a4 <da07f009e889819ec410fa1f0f12534bfb9e21dd
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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