CVE-2026-82586 (GCVE-0-2026-82586)
Vulnerability from cvelistv5 – Published: 2026-09-07 22:34 – Updated: 2026-09-08 14:44
VLAI
EPSS
VEX
Title
AshLua read operation aggregate bypasses the exposed-field allow-list, exposing private attributes
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 14:44 UTC
CWE
- CWE-424 - Improper Protection of Alternate Path
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_lua/security/a… | vendor-advisoryrelated |
| 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/c0d… | patch |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| ash-project | ash_lua |
Affected:
0.1.0 , < 0.2.1
(semver)
cpe:2.3:a:ash-project:ash_lua:*:*:*:*:*:*:*:* |
||
| ash-project | ash_lua |
Affected:
8675e47cca81f36594083a7e63379bac9e123e72 , < c0dfcd9494766d548178c37df0bd01cff378e1c7
(git)
cpe:2.3:a:ash-project:ash_lua:*:*:*:*:*:*:*:* |
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"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Zach Daniel / Ash Project"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper 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.\u003c/p\u003e\n\u003cp\u003eAshLua exposes Ash resources to Lua scripts, gated by a manifest declaring which fields are exposed. The \u003ccode\u003eread\u003c/code\u003e action\u0027s \u003ccode\u003eoperation\u003c/code\u003e aggregate path in \u003ccode\u003eAshLua.Runtime\u003c/code\u003e took the field name straight from the Lua call and resolved it with only \u003ccode\u003eString.to_existing_atom\u003c/code\u003e and \u003ccode\u003eAsh.Query.Aggregate.new!\u003c/code\u003e, neither of which consults the exposed-field allow-list the normal \u003ccode\u003efields\u003c/code\u003e path enforces. A script can therefore read the value of any attribute of any record the actor may read, including private \u003ccode\u003esensitive?: true\u003c/code\u003e columns, via \u003ccode\u003eresource.read({ operation = {\"list\", \"hashed_password\"} })\u003c/code\u003e; \u003ccode\u003emin\u003c/code\u003e and \u003ccode\u003emax\u003c/code\u003e give a value oracle. Anyone able to submit or influence a Lua script can reach this.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_lua: from 0.1.0 before 0.2.1.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "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.\n\nAshLua exposes Ash resources to Lua scripts, gated by a manifest declaring which fields are exposed. The `read` action\u0027s `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.\n\nThis issue affects ash_lua: from 0.1.0 before 0.2.1."
}
],
"value": "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.\n\nAshLua exposes Ash resources to Lua scripts, gated by a manifest declaring which fields are exposed. The read action\u0027s 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.\n\nThis issue affects ash_lua: from 0.1.0 before 0.2.1."
}
],
"impacts": [
{
"capecId": "CAPEC-554",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-554 Functionality Bypass"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-424",
"description": "CWE-424 Improper Protection of Alternate Path",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-07T22:34:14.837Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/ash-project/ash_lua/security/advisories/GHSA-37jv-wc37-fhcw"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-82586.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82586"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ash-project/ash_lua/commit/c0dfcd9494766d548178c37df0bd01cff378e1c7"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "AshLua read operation aggregate bypasses the exposed-field allow-list, exposing private attributes"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-82586",
"datePublished": "2026-09-07T22:34:14.837Z",
"dateReserved": "2026-09-07T19:30:01.631Z",
"dateUpdated": "2026-09-07T22:34:14.837Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.