Vulnerability · Published Aug 31, 2026 · Assigned by EEF
CVE-2026-82564Identity tool filter in AshAi accepts operator maps, allowing update or destroy of unidentified records
High 7.1
In plain English
A high-severity authorization bypass via user-controlled key in ash_ai from ash-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Official description
Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_ai allows a caller of an identity-configured tool to update or destroy records it never identified, including every row in the table. In AshAi.Tool.Execution, identity_filter/3 built the update/destroy filter directly from the raw tool arguments as [{key, Map.get(arguments, to_string(key))}] and passed it to Ash.Query.do_filter/2. A map value is parsed as a predicate expression rather than a literal, so a caller can send {"public_ref": {"not_eq": "<own-ref>"}} and, combined with Ash.Query.limit(1) and Ash.bulk_update!/Ash.bulk_destroy!, retarget the write at a record it never identified; an omitted key yields an IS NULL filter that matches an arbitrary row. The fix casts each identity value to the field type, rejecting non-scalar inputs. This issue affects ash_ai: from 0.6.0 before 1.0.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ash-project | ash_ai | 0.6.0 – before 1.0.0 |
| ash-project | ash_ai | bc2122f78fca6c11d8ec2b9ac53148ec17476460 – before 87f616d5bfbf7af43346f0701ae17f853789a602 |
Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/ash-project/ash_ai/security/advisories/GHSA-jg86-xh36-h5xc vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2026-82564.html related
- https://osv.dev/vulnerability/EEF-CVE-2026-82564 related
- https://github.com/ash-project/ash_ai/commit/87f616d5bfbf7af43346f0701ae17f853789a602 patch