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

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...

CVE-2026-82749

CVE-2026-82749 is an Incorrect Authorization flaw in ash-project ash (versions 3.13.2 through 3.32.1 ). The vulnerable component is resolve_parent_in_filter/3 in lib/ash/actions/read/relationships.ex, which resolved unresolvable parent(...) references to nil instead of raising an error. This caus...