CVE-2026-82740 (GCVE-0-2026-82740)
Vulnerability from cvelistv5 – Published: 2026-09-01 03:29 – Updated: 2026-09-01 12:42
VLAI
EPSS
VEX
Title
Ash.Type ignores outer array constraints on nested {:array, {:array, type}} inputs
Summary
Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation.
Ash.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs.
This issue affects ash: from 2.16.1 before 3.32.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 12:42 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82740.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82740 | related |
| https://github.com/ash-project/ash/commit/c85ccff… | patch |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| ash-project | ash |
Affected:
2.16.1 , < 3.32.2
(semver)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
||
| ash-project | ash |
Affected:
7b50a401d85018371659e51c34c89d7e1d0c2ac9 , < c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce
(git)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82740",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T12:42:32.300749Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T12:42:58.541Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Ash.Type\u0027"
],
"packageName": "ash",
"packageURL": "pkg:hex/ash",
"product": "ash",
"programFiles": [
"lib/ash/type/type.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Ash.Type\u0027:apply_constraints/3"
}
],
"repo": "https://github.com/ash-project/ash",
"vendor": "ash-project",
"versions": [
{
"lessThan": "3.32.2",
"status": "affected",
"version": "2.16.1",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Ash.Type\u0027"
],
"packageName": "ash-project/ash",
"packageURL": "pkg:github/ash-project/ash",
"product": "ash",
"programFiles": [
"lib/ash/type/type.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Ash.Type\u0027:apply_constraints/3"
}
],
"repo": "https://github.com/ash-project/ash",
"vendor": "ash-project",
"versions": [
{
"lessThan": "c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce",
"status": "affected",
"version": "7b50a401d85018371659e51c34c89d7e1d0c2ac9",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*",
"versionEndExcluding": "3.32.2",
"versionStartIncluding": "2.16.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Zach Daniel / Ash Project"
},
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e attribute, letting invalid input pass validation.\u003c/p\u003e\n\u003cp\u003e\u003ccode\u003eAsh.Type.apply_constraints/3\u003c/code\u003e (\u003ccode\u003elib/ash/type/type.ex\u003c/code\u003e) handled the \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e case by mapping only the inner \u003ccode\u003e{:array, type}\u003c/code\u003e constraints over each element, so constraints declared on the outer array (such as \u003ccode\u003emin_length\u003c/code\u003e, \u003ccode\u003emax_length\u003c/code\u003e, and \u003ccode\u003enil_items?\u003c/code\u003e) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or \u003ccode\u003enil\u003c/code\u003e entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for \u003ccode\u003enil\u003c/code\u003e and non-list inputs.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash: from 2.16.1 before 3.32.2.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested `{:array, {:array, type}}` attribute, letting invalid input pass validation.\n\n`Ash.Type.apply_constraints/3` (`lib/ash/type/type.ex`) handled the `{:array, {:array, type}}` case by mapping only the inner `{:array, type}` constraints over each element, so constraints declared on the outer array (such as `min_length`, `max_length`, and `nil_items?`) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or `nil` entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for `nil` and non-list inputs.\n\nThis issue affects ash: from 2.16.1 before 3.32.2."
}
],
"value": "Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation.\n\nAsh.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs.\n\nThis issue affects ash: from 2.16.1 before 3.32.2."
}
],
"impacts": [
{
"capecId": "CAPEC-153",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-153 Input Data Manipulation"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T03:29:11.804Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-82740.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82740"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ash-project/ash/commit/c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Ash.Type ignores outer array constraints on nested {:array, {:array, type}} inputs"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-82740",
"datePublished": "2026-09-01T03:29:11.804Z",
"dateReserved": "2026-08-31T00:59:10.002Z",
"dateUpdated": "2026-09-01T12:42:58.541Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-82740",
"date": "2026-09-01",
"epss": "0.00126",
"percentile": "0.02599"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-82740\",\"sourceIdentifier\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"published\":\"2026-09-01T04:18:03.763\",\"lastModified\":\"2026-09-01T13:20:03.970\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation.\\n\\nAsh.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs.\\n\\nThis issue affects ash: from 2.16.1 before 3.32.2.\"}],\"affected\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"affectedData\":[{\"vendor\":\"ash-project\",\"product\":\"ash\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://repo.hex.pm\",\"packageName\":\"ash\",\"cpes\":[\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"],\"modules\":[\"\u0027Elixir.Ash.Type\u0027\"],\"programFiles\":[\"lib/ash/type/type.ex\"],\"programRoutines\":[{\"name\":\"\u0027Elixir.Ash.Type\u0027:apply_constraints/3\"}],\"repo\":\"https://github.com/ash-project/ash\",\"packageURL\":\"pkg:hex/ash\",\"versions\":[{\"version\":\"2.16.1\",\"lessThan\":\"3.32.2\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"ash-project\",\"product\":\"ash\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://github.com\",\"packageName\":\"ash-project/ash\",\"cpes\":[\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"],\"modules\":[\"\u0027Elixir.Ash.Type\u0027\"],\"programFiles\":[\"lib/ash/type/type.ex\"],\"programRoutines\":[{\"name\":\"\u0027Elixir.Ash.Type\u0027:apply_constraints/3\"}],\"repo\":\"https://github.com/ash-project/ash\",\"packageURL\":\"pkg:github/ash-project/ash\",\"versions\":[{\"version\":\"7b50a401d85018371659e51c34c89d7e1d0c2ac9\",\"lessThan\":\"c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce\",\"versionType\":\"git\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":2.1,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-01T12:42:32.300749Z\",\"id\":\"CVE-2026-82740\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"references\":[{\"url\":\"https://cna.erlef.org/cves/CVE-2026-82740.html\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/ash-project/ash/commit/c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://osv.dev/vulnerability/EEF-CVE-2026-82740\",\"source\":\"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\"},{\"url\":\"https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-82740\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-01T12:42:32.300749Z\"}}}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-01T12:42:49.595Z\"}}], \"cna\": {\"title\": \"Ash.Type ignores outer array constraints on nested {:array, {:array, type}} inputs\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Zach Daniel / Ash Project\"}, {\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}], \"impacts\": [{\"capecId\": \"CAPEC-153\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-153 Input Data Manipulation\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 2.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"LOCAL\", \"baseSeverity\": \"LOW\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.Type\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.16.1\", \"lessThan\": \"3.32.2\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:hex/ash\", \"packageName\": \"ash\", \"programFiles\": [\"lib/ash/type/type.ex\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.Type\u0027:apply_constraints/3\"}]}, {\"cpes\": [\"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.Ash.Type\u0027\"], \"product\": \"ash\", \"versions\": [{\"status\": \"affected\", \"version\": \"7b50a401d85018371659e51c34c89d7e1d0c2ac9\", \"lessThan\": \"c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/ash-project/ash\", \"packageName\": \"ash-project/ash\", \"programFiles\": [\"lib/ash/type/type.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"\u0027Elixir.Ash.Type\u0027:apply_constraints/3\"}]}], \"references\": [{\"url\": \"https://github.com/ash-project/ash/security/advisories/GHSA-v29m-p28g-w5fc\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-82740.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-82740\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/ash-project/ash/commit/c85ccff7dc6e3b0b3e40ad788b0056b3b6bee5ce\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested {:array, {:array, type}} attribute, letting invalid input pass validation.\\n\\nAsh.Type.apply_constraints/3 (lib/ash/type/type.ex) handled the {:array, {:array, type}} case by mapping only the inner {:array, type} constraints over each element, so constraints declared on the outer array (such as min_length, max_length, and nil_items?) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or nil entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for nil and non-list inputs.\\n\\nThis issue affects ash: from 2.16.1 before 3.32.2.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eImproper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e attribute, letting invalid input pass validation.\u003c/p\u003e\\n\u003cp\u003e\u003ccode\u003eAsh.Type.apply_constraints/3\u003c/code\u003e (\u003ccode\u003elib/ash/type/type.ex\u003c/code\u003e) handled the \u003ccode\u003e{:array, {:array, type}}\u003c/code\u003e case by mapping only the inner \u003ccode\u003e{:array, type}\u003c/code\u003e constraints over each element, so constraints declared on the outer array (such as \u003ccode\u003emin_length\u003c/code\u003e, \u003ccode\u003emax_length\u003c/code\u003e, and \u003ccode\u003enil_items?\u003c/code\u003e) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or \u003ccode\u003enil\u003c/code\u003e entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for \u003ccode\u003enil\u003c/code\u003e and non-list inputs.\u003c/p\u003e\\n\u003cp\u003eThis issue affects ash: from 2.16.1 before 3.32.2.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"Improper Input Validation vulnerability in ash-project ash fails to enforce the outer array constraints on a doubly-nested `{:array, {:array, type}}` attribute, letting invalid input pass validation.\\n\\n`Ash.Type.apply_constraints/3` (`lib/ash/type/type.ex`) handled the `{:array, {:array, type}}` case by mapping only the inner `{:array, type}` constraints over each element, so constraints declared on the outer array (such as `min_length`, `max_length`, and `nil_items?`) were never applied. An attacker could submit an outer list that violates those constraints (too many elements, or `nil` entries where disallowed) and have it accepted and persisted. The fix enforces the outer array constraints and adds explicit handling for `nil` and non-list inputs.\\n\\nThis issue affects ash: from 2.16.1 before 3.32.2.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-20\", \"description\": \"CWE-20 Improper Input Validation\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.32.2\", \"versionStartIncluding\": \"2.16.1\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-09-01T03:29:11.804Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-82740\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-01T12:42:58.541Z\", \"dateReserved\": \"2026-08-31T00:59:10.002Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-09-01T03:29:11.804Z\", \"assignerShortName\": \"EEF\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
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.
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.
Loading…
Loading…