Vulnerability · Published Sep 7, 2026 · Assigned by EEF
CVE-2026-82586AshLua read operation aggregate bypasses the exposed-field allow-list, exposing private attributes
High 8.2
In plain English
A high-severity security flaw in ash_lua from ash-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Official description
Improper Protection of Alternate Path vulnerability in ash-project ash_lua allows a user-supplied Lua script to read attributes that are not on the exposed-field allow-list. AshLua exposes Ash resources to Lua scripts, gated by a manifest declaring which fields are exposed. The read action's operation aggregate path in AshLua.Runtime took the field name straight from the Lua call and resolved it with only String.to_existing_atom and Ash.Query.Aggregate.new!, neither of which consults the exposed-field allow-list the normal fields path enforces. A script can therefore read the value of any attribute of any record the actor may read, including private sensitive?: true columns, via resource.read({ operation = {"list", "hashed_password"} }); min and max give a value oracle. Anyone able to submit or influence a Lua script can reach this. This issue affects ash_lua: from 0.1.0 before 0.2.1.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ash-project | ash_lua | 0.1.0 – before 0.2.1 |
| ash-project | ash_lua | 8675e47cca81f36594083a7e63379bac9e123e72 – before c0dfcd9494766d548178c37df0bd01cff378e1c7 |
Weakness: CWE-424 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2026-82586.html related
- https://osv.dev/vulnerability/EEF-CVE-2026-82586 related
- https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7 patch