CVE-2026-82730 (GCVE-0-2026-82730)
Vulnerability from cvelistv5 – Published: 2026-09-01 02:09 – Updated: 2026-09-01 14:54
VLAI
EPSS
VEX
Title
Authorization-redacted field values disclosed through AshTypescript result normalization
Summary
Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.
When a field policy denies an attribute, Ash substitutes %Ash.ForbiddenField{}, which retains the real value in original_value because embedded resources must remain writable, and hides it from Inspect rather than removing it. AshTypescript.Rpc.ResultProcessor strips these markers to nil on its template-driven paths, but normalize_primitive/1 in lib/ash_typescript/rpc/result_processor.ex had no such clause, so a marker fell through to the generic struct branch which calls Map.from_struct/1 and serializes every key, original_value included. The denied value is returned to the caller inside the marker that represents its own denial.
The simplest trigger is an action returning an embedded resource as a map, which routes through normalize_resource_struct/2 with an empty template. normalize_value_for_json/1 is a public, unguarded entry point to the same path.
This issue affects ash_typescript: from 0.11.0 before 0.18.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:53 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_typescript/sec… | relatedvendor-advisory |
| https://cna.erlef.org/cves/CVE-2026-82730.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82730 | related |
| https://github.com/ash-project/ash_typescript/com… | patch |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| ash-project | ash_typescript |
Affected:
0.11.0 , < 0.18.0
(semver)
cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:* |
||
| ash-project | ash_typescript |
Affected:
9cade7661a01b6e4d940386f482f48d148dbb1e6 , < aa7f9f1967b0bec806ac1156142267e805d70a55
(git)
cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82730",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T14:53:56.550522Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T14:54:16.008Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash_typescript",
"packageURL": "pkg:hex/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "0.18.0",
"status": "affected",
"version": "0.11.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash-project/ash_typescript",
"packageURL": "pkg:github/ash-project/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "aa7f9f1967b0bec806ac1156142267e805d70a55",
"status": "affected",
"version": "9cade7661a01b6e4d940386f482f48d148dbb1e6",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "The application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map."
}
],
"value": "The application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.18.0",
"versionStartIncluding": "0.11.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Torkild Gundersen Kjevik / Ash Project"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIncorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\u003c/p\u003e\n\u003cp\u003eWhen a field policy denies an attribute, Ash substitutes \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e, which retains the real value in \u003ccode\u003eoriginal_value\u003c/code\u003e because embedded resources must remain writable, and hides it from \u003ccode\u003eInspect\u003c/code\u003e rather than removing it. \u003ccode\u003eAshTypescript.Rpc.ResultProcessor\u003c/code\u003e strips these markers to \u003ccode\u003enil\u003c/code\u003e on its template-driven paths, but \u003ccode\u003enormalize_primitive/1\u003c/code\u003e in \u003ccode\u003elib/ash_typescript/rpc/result_processor.ex\u003c/code\u003e had no such clause, so a marker fell through to the generic struct branch which calls \u003ccode\u003eMap.from_struct/1\u003c/code\u003e and serializes every key, \u003ccode\u003eoriginal_value\u003c/code\u003e included. The denied value is returned to the caller inside the marker that represents its own denial.\u003c/p\u003e\n\u003cp\u003eThe simplest trigger is an action returning an embedded resource as a map, which routes through \u003ccode\u003enormalize_resource_struct/2\u003c/code\u003e with an empty template. \u003ccode\u003enormalize_value_for_json/1\u003c/code\u003e is a public, unguarded entry point to the same path.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_typescript: from 0.11.0 before 0.18.0.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes `%Ash.ForbiddenField{}`, which retains the real value in `original_value` because embedded resources must remain writable, and hides it from `Inspect` rather than removing it. `AshTypescript.Rpc.ResultProcessor` strips these markers to `nil` on its template-driven paths, but `normalize_primitive/1` in `lib/ash_typescript/rpc/result_processor.ex` had no such clause, so a marker fell through to the generic struct branch which calls `Map.from_struct/1` and serializes every key, `original_value` included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through `normalize_resource_struct/2` with an empty template. `normalize_value_for_json/1` is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0."
}
],
"value": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes %Ash.ForbiddenField{}, which retains the real value in original_value because embedded resources must remain writable, and hides it from Inspect rather than removing it. AshTypescript.Rpc.ResultProcessor strips these markers to nil on its template-driven paths, but normalize_primitive/1 in lib/ash_typescript/rpc/result_processor.ex had no such clause, so a marker fell through to the generic struct branch which calls Map.from_struct/1 and serializes every key, original_value included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through normalize_resource_struct/2 with an empty template. normalize_value_for_json/1 is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"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-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T02:09:01.851Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"related",
"vendor-advisory"
],
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-82730.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82730"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ash-project/ash_typescript/commit/aa7f9f1967b0bec806ac1156142267e805d70a55"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Authorization-redacted field values disclosed through AshTypescript result normalization"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-82730",
"datePublished": "2026-09-01T02:09:01.851Z",
"dateReserved": "2026-08-31T00:59:08.960Z",
"dateUpdated": "2026-09-01T14:54:16.008Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-82730",
"date": "2026-09-17",
"epss": "0.00285",
"percentile": "0.21182"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash_typescript",
"packageURL": "pkg:hex/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "0.18.0",
"status": "affected",
"version": "0.11.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash-project/ash_typescript",
"packageURL": "pkg:github/ash-project/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "aa7f9f1967b0bec806ac1156142267e805d70a55",
"status": "affected",
"version": "9cade7661a01b6e4d940386f482f48d148dbb1e6",
"versionType": "git"
}
]
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes %Ash.ForbiddenField{}, which retains the real value in original_value because embedded resources must remain writable, and hides it from Inspect rather than removing it. AshTypescript.Rpc.ResultProcessor strips these markers to nil on its template-driven paths, but normalize_primitive/1 in lib/ash_typescript/rpc/result_processor.ex had no such clause, so a marker fell through to the generic struct branch which calls Map.from_struct/1 and serializes every key, original_value included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through normalize_resource_struct/2 with an empty template. normalize_value_for_json/1 is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0."
}
],
"id": "CVE-2026-82730",
"lastModified": "2026-09-01T21:15:00.147",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"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/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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-82730",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T14:53:56.550522Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-01T03:16:52.787",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://cna.erlef.org/cves/CVE-2026-82730.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/ash-project/ash_typescript/commit/aa7f9f1967b0bec806ac1156142267e805d70a55"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82730"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-863"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-82730",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T14:53:56.550522Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T14:54:12.858Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash_typescript",
"packageURL": "pkg:hex/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "0.18.0",
"status": "affected",
"version": "0.11.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027"
],
"packageName": "ash-project/ash_typescript",
"packageURL": "pkg:github/ash-project/ash_typescript",
"product": "ash_typescript",
"programFiles": [
"lib/ash_typescript/rpc/result_processor.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_primitive/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_value_for_json/1"
},
{
"name": "\u0027Elixir.AshTypescript.Rpc.ResultProcessor\u0027:normalize_resource_struct/2"
}
],
"repo": "https://github.com/ash-project/ash_typescript",
"vendor": "ash-project",
"versions": [
{
"lessThan": "aa7f9f1967b0bec806ac1156142267e805d70a55",
"status": "affected",
"version": "9cade7661a01b6e4d940386f482f48d148dbb1e6",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "The application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map."
}
],
"value": "The application exposes an AshTypescript RPC endpoint over HTTP and relies on Ash field policies to hide attributes on embedded resources that an action returns as a map."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*",
"versionEndExcluding": "0.18.0",
"versionStartIncluding": "0.11.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Torkild Gundersen Kjevik / Ash Project"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIncorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\u003c/p\u003e\n\u003cp\u003eWhen a field policy denies an attribute, Ash substitutes \u003ccode\u003e%Ash.ForbiddenField{}\u003c/code\u003e, which retains the real value in \u003ccode\u003eoriginal_value\u003c/code\u003e because embedded resources must remain writable, and hides it from \u003ccode\u003eInspect\u003c/code\u003e rather than removing it. \u003ccode\u003eAshTypescript.Rpc.ResultProcessor\u003c/code\u003e strips these markers to \u003ccode\u003enil\u003c/code\u003e on its template-driven paths, but \u003ccode\u003enormalize_primitive/1\u003c/code\u003e in \u003ccode\u003elib/ash_typescript/rpc/result_processor.ex\u003c/code\u003e had no such clause, so a marker fell through to the generic struct branch which calls \u003ccode\u003eMap.from_struct/1\u003c/code\u003e and serializes every key, \u003ccode\u003eoriginal_value\u003c/code\u003e included. The denied value is returned to the caller inside the marker that represents its own denial.\u003c/p\u003e\n\u003cp\u003eThe simplest trigger is an action returning an embedded resource as a map, which routes through \u003ccode\u003enormalize_resource_struct/2\u003c/code\u003e with an empty template. \u003ccode\u003enormalize_value_for_json/1\u003c/code\u003e is a public, unguarded entry point to the same path.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_typescript: from 0.11.0 before 0.18.0.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes `%Ash.ForbiddenField{}`, which retains the real value in `original_value` because embedded resources must remain writable, and hides it from `Inspect` rather than removing it. `AshTypescript.Rpc.ResultProcessor` strips these markers to `nil` on its template-driven paths, but `normalize_primitive/1` in `lib/ash_typescript/rpc/result_processor.ex` had no such clause, so a marker fell through to the generic struct branch which calls `Map.from_struct/1` and serializes every key, `original_value` included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through `normalize_resource_struct/2` with an empty template. `normalize_value_for_json/1` is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0."
}
],
"value": "Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.\n\nWhen a field policy denies an attribute, Ash substitutes %Ash.ForbiddenField{}, which retains the real value in original_value because embedded resources must remain writable, and hides it from Inspect rather than removing it. AshTypescript.Rpc.ResultProcessor strips these markers to nil on its template-driven paths, but normalize_primitive/1 in lib/ash_typescript/rpc/result_processor.ex had no such clause, so a marker fell through to the generic struct branch which calls Map.from_struct/1 and serializes every key, original_value included. The denied value is returned to the caller inside the marker that represents its own denial.\n\nThe simplest trigger is an action returning an embedded resource as a map, which routes through normalize_resource_struct/2 with an empty template. normalize_value_for_json/1 is a public, unguarded entry point to the same path.\n\nThis issue affects ash_typescript: from 0.11.0 before 0.18.0."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"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-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T02:09:01.851Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"related",
"vendor-advisory"
],
"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6929-rjmh-4x62"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-82730.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82730"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ash-project/ash_typescript/commit/aa7f9f1967b0bec806ac1156142267e805d70a55"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Authorization-redacted field values disclosed through AshTypescript result normalization"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-82730",
"datePublished": "2026-09-01T02:09:01.851Z",
"dateReserved": "2026-08-31T00:59:08.960Z",
"dateUpdated": "2026-09-01T14:54:16.008Z",
"state": "PUBLISHED"
},
"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.
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.
Loading…
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.
Loading…