{
    "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 Männchen / 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"
        }
    }
}