High severity · published Sep 7, 2026
CVE-2026-82586
AshLua read operation aggregate bypasses the exposed-field allow-list, exposing private attributes
8.2
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
ash_lua · ash-project
0.1.0 before 0.2.1; 8675e47cca81f36594083a7e63379bac9e123e72 before c0dfcd9494766d548178c37df0bd01cff378e1c7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82586
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82586
cna.erlef.org
https://cna.erlef.org/cves/CVE-2026-82586.html
github.com
https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7
github.com
https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw
osv.dev
https://osv.dev/vulnerability/EEF-CVE-2026-82586
More from ash_lua
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AshLua eval read operations can read field-policy-protected fields via aggregates
