Description (CNA)
Incorrect Authorization vulnerability in ash-project ash returns records that a runtime read policy denies to any actor. When a resource has an access_type :runtime read policy (a check evaluated per record rather than compiled to a filter), Ash.Policy.Authorizer decides each record in check_result/1 (lib/ash/policy/authorizer/authorizer.ex) by discarding impossible policy scenarios and inspecting what remains. When every scenario for a record was impossible, meaning no policy can authorize it and it must be forbidden, the empty-scenario branch instead kept the record ({[record | data], authorizer, any_forbidden?}) and returned it as authorized. As a result, records the runtime read policy denies are returned to any actor. The fix forbids a record whose scenarios are all impossible. This issue affects ash: from 3.4.44 before 3.32.2.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ash-project / ash | affected 3.4.44 before 3.32.2 |
| ash-project / ash | affected f4a8ff53fd3b974468d73685cd3fc842ef893de3 before 6eddb8ab26e45023faf0c79ebd152bb40aefda02 |
CWE
CWE-863
References
- https://github.com/ash-project/ash/security/advisories/GHSA-4259-gvr2-4xhq
- https://cna.erlef.org/cves/CVE-2026-82747.html
- https://osv.dev/vulnerability/EEF-CVE-2026-82747
- https://github.com/ash-project/ash/commit/6eddb8ab26e45023faf0c79ebd152bb40aefda02
ADP enrichment
No English description supplied.