Ash relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records (CVE-2026-82749) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82749

Ash relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records

Answer in brief

CVE-2026-82749 records a Unknown severity vulnerability in Ash relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records. The current sources do not mark it as known exploited. The current feed maps ash-project/ash (generic), ash-project/ash (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 1, 2026Updated Sep 1, 2026Source checked Sep 1, 2026First seen by HOL Sep 1, 2026Material review Sep 1, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ash-project/ash (generic), ash-project/ash (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ash-project/ashgeneric	>=3.13.2 <3.32.2	3.32.2
ash-project/ashgeneric	>=0ddff26e6e6bc6d182e1af2f98b431575e5b4179 <e52dad2c39a35f6f043f7324d26e4f4e2551dfd2	e52dad2c39a35f6f043f7324d26e4f4e2551dfd2

Recommended response

Check inventory. Check lockfiles and deployed manifests for ash-project/ash, ash-project/ash.
Review the reported fix. Update ash-project/ash to 3.32.2; ash-project/ash to e52dad2c39a35f6f043f7324d26e4f4e2551dfd2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 1, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.