{"api_version":"1","generated_at":"2026-09-01T03:54:09+00:00","cve":"CVE-2026-82730","urls":{"html":"https://cve.report/CVE-2026-82730","api":"https://cve.report/api/cve/CVE-2026-82730.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-82730","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-82730"},"summary":{"title":"Authorization-redacted field values disclosed through AshTypescript result normalization","description":"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.","state":"PUBLISHED","assigner":"EEF","published_at":"2026-09-01 03:16:52","updated_at":"2026-09-01 03:16:52"},"problem_types":["CWE-863","CWE-863 CWE-863 Incorrect 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82730","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"ash-project","product":"ash_typescript","version":"affected 0.11.0 0.18.0 semver","platforms":[]},{"source":"CNA","vendor":"ash-project","product":"ash_typescript","version":"affected 9cade7661a01b6e4d940386f482f48d148dbb1e6 aa7f9f1967b0bec806ac1156142267e805d70a55 git","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Peter Ullrich","lang":"en"},{"source":"CNA","value":"Peter Ullrich","lang":"en"},{"source":"CNA","value":"Torkild Gundersen Kjevik / Ash Project","lang":"en"},{"source":"CNA","value":"Jonatan Männchen / EEF","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"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 Männchen / 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":{"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":"2026-09-01T02:09:01.851Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-01 03:16:52","lastModifiedDate":"2026-09-01 03:16:52","problem_types":["CWE-863","CWE-863 CWE-863 Incorrect Authorization"],"metrics":{"cvssMetricV40":[{"source":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","type":"Secondary","cvssData":{"version":"4.0","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","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","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"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"82730","Ordinal":"1","Title":"Authorization-redacted field values disclosed through AshTypescr","CVE":"CVE-2026-82730","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"82730","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Authorization-redacted field values disclosed through AshTypescr"}]}}}