{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82730", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-31T00:59:08.960Z", "datePublished": "2026-09-01T02:09:01.851Z", "dateUpdated": "2026-09-01T02:09:01.851Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshTypescript.Rpc.ResultProcessor'"], "packageName": "ash_typescript", "packageURL": "pkg:hex/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/rpc/result_processor.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.Rpc.ResultProcessor':normalize_primitive/1"}, {"name": "'Elixir.AshTypescript.Rpc.ResultProcessor':normalize_value_for_json/1"}, {"name": "'Elixir.AshTypescript.Rpc.ResultProcessor':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": ["'Elixir.AshTypescript.Rpc.ResultProcessor'"], "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": "'Elixir.AshTypescript.Rpc.ResultProcessor':normalize_primitive/1"}, {"name": "'Elixir.AshTypescript.Rpc.ResultProcessor':normalize_value_for_json/1"}, {"name": "'Elixir.AshTypescript.Rpc.ResultProcessor':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": "<p>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.</p>"}, {"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": "<p>Incorrect Authorization vulnerability in ash-project ash_typescript allows an unauthorized RPC caller to read attribute values that Ash field policies denied.</p>\n<p>When a field policy denies an attribute, Ash substitutes <code>%Ash.ForbiddenField{}</code>, which retains the real value in <code>original_value</code> because embedded resources must remain writable, and hides it from <code>Inspect</code> rather than removing it. <code>AshTypescript.Rpc.ResultProcessor</code> strips these markers to <code>nil</code> on its template-driven paths, but <code>normalize_primitive/1</code> in <code>lib/ash_typescript/rpc/result_processor.ex</code> had no such clause, so a marker fell through to the generic struct branch which calls <code>Map.from_struct/1</code> and serializes every key, <code>original_value</code> included. The denied value is returned to the caller inside the marker that represents its own denial.</p>\n<p>The simplest trigger is an action returning an embedded resource as a map, which routes through <code>normalize_resource_struct/2</code> with an empty template. <code>normalize_value_for_json/1</code> is a public, unguarded entry point to the same path.</p>\n<p>This issue affects ash_typescript: from 0.11.0 before 0.18.0.</p>"}, {"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": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-01T02:09:01.851Z"}, "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"}}}

{}

{}

{}

{}