{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82733", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-31T00:59:10.001Z", "datePublished": "2026-09-01T02:09:22.784Z", "dateUpdated": "2026-09-01T02:09:22.784Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshTypescript.TypedController.RequestHandler'"], "packageName": "ash_typescript", "packageURL": "pkg:hex/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/request_handler.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.RequestHandler':unexpected_return/2"}, {"name": "'Elixir.AshTypescript.TypedController.RequestHandler':handle/4"}], "repo": "https://github.com/ash-project/ash_typescript", "vendor": "ash-project", "versions": [{"lessThan": "0.18.0", "status": "affected", "version": "0.15.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshTypescript.TypedController.RequestHandler'"], "packageName": "ash-project/ash_typescript", "packageURL": "pkg:github/ash-project/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/request_handler.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.RequestHandler':unexpected_return/2"}, {"name": "'Elixir.AshTypescript.TypedController.RequestHandler':handle/4"}], "repo": "https://github.com/ash-project/ash_typescript", "vendor": "ash-project", "versions": [{"lessThan": "dec80e29543f96e43eeece8501376562f17ac638", "status": "affected", "version": "546a15e1a2d7dbf1df2d5a6ee4404bc3da87852e", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The application exposes an AshTypescript typed controller over HTTP with a route handler that can return a non-<code>Plug.Conn</code> term carrying sensitive data.</p>"}, {"base64": false, "type": "text/markdown", "value": "The application exposes an AshTypescript typed controller over HTTP with a route handler that can return a non-`Plug.Conn` term carrying sensitive data."}], "value": "The application exposes an AshTypescript typed controller over HTTP with a route handler that can return a non-Plug.Conn term carrying sensitive data."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.18.0", "versionStartIncluding": "0.15.0", "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>Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal application data from an HTTP 500 response body.</p>\n<p>When a typed-controller route handler returns anything other than a <code>%Plug.Conn{}</code>, <code>dispatch/3</code> in <code>lib/ash_typescript/typed_controller/request_handler.ex</code> passes the value to <code>unexpected_return/2</code>, which interpolates <code>inspect(value, limit: 50)</code> directly into the response message. The <code>limit</code> option bounds elements per collection rather than the term as a whole, so a handler falling through with a term such as <code>{:error, %User{}}</code> or a changeset serialises its full field set, including hashed passwords, tokens, and tenant identifiers, into the JSON error returned to the caller.</p>\n<p>This contradicts the module's own posture elsewhere: the <code>rescue</code> clause gates <code>Exception.message/1</code> behind <code>AshTypescript.typed_controller_show_raised_errors?/0</code> and otherwise returns a generic message, while this path is ungated and always echoes.</p>\n<p>This issue affects ash_typescript: from 0.15.0 before 0.18.0.</p>"}, {"base64": false, "type": "text/markdown", "value": "Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal application data from an HTTP 500 response body.\n\nWhen a typed-controller route handler returns anything other than a `%Plug.Conn{}`, `dispatch/3` in `lib/ash_typescript/typed_controller/request_handler.ex` passes the value to `unexpected_return/2`, which interpolates `inspect(value, limit: 50)` directly into the response message. The `limit` option bounds elements per collection rather than the term as a whole, so a handler falling through with a term such as `{:error, %User{}}` or a changeset serialises its full field set, including hashed passwords, tokens, and tenant identifiers, into the JSON error returned to the caller.\n\nThis contradicts the module's own posture elsewhere: the `rescue` clause gates `Exception.message/1` behind `AshTypescript.typed_controller_show_raised_errors?/0` and otherwise returns a generic message, while this path is ungated and always echoes.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0."}], "value": "Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal application data from an HTTP 500 response body.\n\nWhen a typed-controller route handler returns anything other than a %Plug.Conn{}, dispatch/3 in lib/ash_typescript/typed_controller/request_handler.ex passes the value to unexpected_return/2, which interpolates inspect(value, limit: 50) directly into the response message. The limit option bounds elements per collection rather than the term as a whole, so a handler falling through with a term such as {:error, %User{}} or a changeset serialises its full field set, including hashed passwords, tokens, and tenant identifiers, into the JSON error returned to the caller.\n\nThis contradicts the module's own posture elsewhere: the rescue clause gates Exception.message/1 behind AshTypescript.typed_controller_show_raised_errors?/0 and otherwise returns a generic message, while this path is ungated and always echoes.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0."}], "impacts": [{"capecId": "CAPEC-54", "descriptions": [{"lang": "en", "value": "CAPEC-54 Query System for Information"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6.3, "baseSeverity": "MEDIUM", "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:L/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-209", "description": "CWE-209 Generation of Error Message Containing Sensitive Information", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-01T02:09:22.784Z"}, "references": [{"tags": ["related", "vendor-advisory"], "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-ghhw-qh7p-55xr"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-82733.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82733"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash_typescript/commit/dec80e29543f96e43eeece8501376562f17ac638"}], "source": {"discovery": "EXTERNAL"}, "title": "Route handler return value echoed into AshTypescript error response"}}}

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