CVE-2026-82749
mediumpriority · track · 0OT risk · elevatedEPSS 0.002 · 6 %ileUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.9
ssvc
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weaknesses
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affected products (1)
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advisories (1)
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- EEF-CVE-2026-82749Ash relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records2026-09-01vendor · osvUS
## Summary 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.
also known as (1)
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references (4) nvd
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