CVE-2026-82586 Details
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.
A vulnerability in the Ash Project's ash_lua library, specifically in versions 0.1.0 prior to 0.2.1, allows user-supplied Lua scripts to bypass the exposed-field allow-list and access private attributes of Ash resources. This issue arises because the 'read' action's 'operation' aggregate path directly takes field names from Lua calls without validating them against the manifest's exposed-field allow-list. As a result, scripts can read any attribute of any record the actor has permission to access, including sensitive private columns, by manipulating the operation parameter. The vulnerability is exploitable by anyone who can submit or influence Lua scripts.
Users can upgrade to ash_lua version 0.2.1, where this vulnerability is fixed. If an upgrade is not possible, avoid exposing AshLua scripting to untrusted users or ensure that sensitive attributes are not included in the exposed resources.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 7, 2026CISA-ADP
Assessed Sep 8, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cna.erlef.org/cves/CVE-2026-82586.html | EEF | AdvisoryBundle |
| https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7 | EEF | Source CodeVendor |
| https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw | EEF | AdvisoryRemedyVendor |
| https://osv.dev/vulnerability/EEF-CVE-2026-82586 | EEF | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-424 | Improper Protection of Alternate Path | EEF |
Affected Products
| Product | Versions |
|---|---|
| ash-project ash_lua | >= 0.1.0, < 0.2.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 8, 2026 | CVE Modified | CISA-ADP |
| Sep 7, 2026 | New CVE Received | EEF |