# CVE-2026-82586

## Summary

- **CVE ID:** CVE-2026-82586
- **Severity:** HIGH
- **CVSS Score:** 8.2 (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)
- **CWE:** CWE-424
- **Published:** Sep 7, 2026
- **Last Modified:** Sep 8, 2026

## 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

- ash-project — ash_lua (0.1.0)
- ash-project — ash_lua (8675e47cca81f36594083a7e63379bac9e123e72)

## References

- [CNA](https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw)
- [CNA](https://cna.erlef.org/cves/CVE-2026-82586.html)
- [CNA](https://osv.dev/vulnerability/EEF-CVE-2026-82586)
- [CNA](https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 25.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._