Cross-tenant data disclosure via unresolved parent filter
Published Sep 1, 2026 · Updated Sep 1, 2026
Incorrect authorization in Ash Framework Ash 3.13.2 through 3.32.1 allows remote authenticated users to read cross-tenant records over HTTP. The resolve_parent_in_filter/3 path substitutes nil when Ash.Expr.eval/2 cannot resolve a parent(...) reference, converting tenant scope into an IS NULL match. Exposure requires an HTTP-accessible no_attributes? relationship filter using parent(...), an omitted parent attribute, and authorization to read the relationship.
Summary
What happened
Incorrect authorization in Ash Framework Ash 3.13.2 through 3.32.1 allows remote authenticated users to read cross-tenant records over HTTP. The resolve_parent_in_filter/3 path substitutes nil when Ash.Expr.eval/2 cannot resolve a parent(...) reference, converting tenant scope into an IS NULL match. Exposure requires an HTTP-accessible no_attributes? relationship filter using parent(...), an omitted parent attribute, and authorization to read the relationship.
The record
- CVE
- CVE-2026-82749
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Vendor
- Ash Framework
- Product
- Ash
- Classifications
- CWE-863, CAPEC-1, T1213
- Attack vector
- network
- Privileges
- authenticated
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?
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- Affected versionversion=0ddff26e6e6bc6d182e1af2f98b431575e5b4179 <e52dad2c39a35f6f043f7324d26e4f4e2551dfd2
- Affected versionversion=3.13.2 <3.32.2
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
- Upstream HTTP sparse-field relationship proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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