Description
Incorrect Authorization vulnerability in ash-project ash widens a relationship's parent(...) scoping filter to match unintended records when the referenced parent field cannot be resolved.

Loading a relationship whose filter references parent(...) resolves that expression against the parent record. resolve_parent_in_filter/3 (lib/ash/actions/read/relationships.ex) resolved an unresolvable parent reference (for example when the referenced field was not selected on the source query) to nil rather than failing. A scoping predicate such as org_id == parent(org_id) then becomes an IS NULL match, and a guard like is_nil(parent(org_id)) or org_id == parent(org_id) activates its unrestricted branch, so the relationship returns records the scope was meant to exclude. The fix fails the read with an error when a parent(...) reference cannot be resolved, instead of defaulting to nil.

This issue affects ash: from 3.13.2 before 3.32.2.
Published: 2026-09-01
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Tue, 01 Sep 2026 04:00:00 +0000

Type Values Removed Values Added
Description Incorrect Authorization vulnerability in ash-project ash widens a relationship's parent(...) scoping filter to match unintended records when the referenced parent field cannot be resolved. Loading a relationship whose filter references parent(...) resolves that expression against the parent record. resolve_parent_in_filter/3 (lib/ash/actions/read/relationships.ex) resolved an unresolvable parent reference (for example when the referenced field was not selected on the source query) to nil rather than failing. A scoping predicate such as org_id == parent(org_id) then becomes an IS NULL match, and a guard like is_nil(parent(org_id)) or org_id == parent(org_id) activates its unrestricted branch, so the relationship returns records the scope was meant to exclude. The fix fails the read with an error when a parent(...) reference cannot be resolved, instead of defaulting to nil. This issue affects ash: from 3.13.2 before 3.32.2.
Title Ash relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records
First Time appeared Ash-project
Ash-project ash
Weaknesses CWE-863
CPEs cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*
Vendors & Products Ash-project
Ash-project ash
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: EEF

Published:

Updated: 2026-09-01T03:54:12.716Z

Reserved: 2026-08-31T01:00:09.774Z

Link: CVE-2026-82749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-01T04:18:05.340

Modified: 2026-09-01T04:18:05.340

Link: CVE-2026-82749

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T07:15:04Z

Weaknesses