{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82731", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-31T00:59:08.960Z", "datePublished": "2026-09-01T02:09:38.801Z", "dateUpdated": "2026-09-01T15:13:54.605Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer'"], "packageName": "ash_typescript", "packageURL": "pkg:hex/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/codegen/route_renderer.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer':build_url_template_to_variable/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.Codegen.RouteRenderer'"], "packageName": "ash-project/ash_typescript", "packageURL": "pkg:github/ash-project/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/codegen/route_renderer.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer':build_url_template_to_variable/4"}], "repo": "https://github.com/ash-project/ash_typescript", "vendor": "ash-project", "versions": [{"lessThan": "5165f752f5f92b755d946f2d1ce750ff69083ffc", "status": "affected", "version": "6669e22ece34b4534e706a46d1842f01b68ee23a", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The application ships a TypeScript client generated by AshTypescript for a typed-controller route taking a path parameter, and passes untrusted input as that parameter.</p>"}, {"base64": false, "type": "text/markdown", "value": "The application ships a TypeScript client generated by AshTypescript for a typed-controller route taking a path parameter, and passes untrusted input as that parameter."}], "value": "The application ships a TypeScript client generated by AshTypescript for a typed-controller route taking a path parameter, and passes untrusted input as that parameter."}], "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>URL Redirection to Untrusted Site ('Open Redirect') vulnerability in ash-project ash_typescript allows an attacker who controls a path-parameter value to redirect a generated client's request, and the credentials attached to it, to an unintended route or an external origin.</p>\n<p>The URL builders in <code>lib/ash_typescript/typed_controller/codegen/route_renderer.ex</code> replace each <code>:param</code> placeholder with a bare template interpolation and never call <code>encodeURIComponent</code>, so the value reaches <code>executeTypedControllerRequest</code> raw. A value containing <code>../</code> is normalised away by the fetch URL resolver and reaches a different route, while <code>?</code> or <code>#</code> truncates the path and can smuggle or override query parameters. For a route whose path begins with a parameter, a value such as <code>/evil.example.com/x</code> yields the protocol-relative URL <code>//evil.example.com/x</code>, sending the request and the credentials from <code>TypedControllerConfig</code> to an attacker-controlled host. Nothing constrains the value at runtime: <code>get_path_param_type/2</code> emits only a TypeScript type, which is erased.</p>\n<p>The query-string path is unaffected, since <code>URLSearchParams.set</code> encodes its own values.</p>\n<p>This issue affects ash_typescript: from 0.15.0 before 0.18.0.</p>"}, {"base64": false, "type": "text/markdown", "value": "URL Redirection to Untrusted Site ('Open Redirect') vulnerability in ash-project ash_typescript allows an attacker who controls a path-parameter value to redirect a generated client's request, and the credentials attached to it, to an unintended route or an external origin.\n\nThe URL builders in `lib/ash_typescript/typed_controller/codegen/route_renderer.ex` replace each `:param` placeholder with a bare template interpolation and never call `encodeURIComponent`, so the value reaches `executeTypedControllerRequest` raw. A value containing `../` is normalised away by the fetch URL resolver and reaches a different route, while `?` or `#` truncates the path and can smuggle or override query parameters. For a route whose path begins with a parameter, a value such as `/evil.example.com/x` yields the protocol-relative URL `//evil.example.com/x`, sending the request and the credentials from `TypedControllerConfig` to an attacker-controlled host. Nothing constrains the value at runtime: `get_path_param_type/2` emits only a TypeScript type, which is erased.\n\nThe query-string path is unaffected, since `URLSearchParams.set` encodes its own values.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0."}], "value": "URL Redirection to Untrusted Site ('Open Redirect') vulnerability in ash-project ash_typescript allows an attacker who controls a path-parameter value to redirect a generated client's request, and the credentials attached to it, to an unintended route or an external origin.\n\nThe URL builders in lib/ash_typescript/typed_controller/codegen/route_renderer.ex replace each :param placeholder with a bare template interpolation and never call encodeURIComponent, so the value reaches executeTypedControllerRequest raw. A value containing ../ is normalised away by the fetch URL resolver and reaches a different route, while ? or # truncates the path and can smuggle or override query parameters. For a route whose path begins with a parameter, a value such as /evil.example.com/x yields the protocol-relative URL //evil.example.com/x, sending the request and the credentials from TypedControllerConfig to an attacker-controlled host. Nothing constrains the value at runtime: get_path_param_type/2 emits only a TypeScript type, which is erased.\n\nThe query-string path is unaffected, since URLSearchParams.set encodes its own values.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0."}], "impacts": [{"capecId": "CAPEC-72", "descriptions": [{"lang": "en", "value": "CAPEC-72 URL Encoding"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "description": "CWE-601 URL Redirection to Untrusted Site ('Open Redirect')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-01T02:09:38.801Z"}, "references": [{"tags": ["related", "vendor-advisory"], "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6g23-p936-fm2f"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-82731.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82731"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash_typescript/commit/5165f752f5f92b755d946f2d1ce750ff69083ffc"}], "source": {"discovery": "EXTERNAL"}, "title": "Unescaped path parameters in AshTypescript generated TypeScript client allow request redirection"}, "adp": [{"references": [{"url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6g23-p936-fm2f", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T15:13:34.848553Z", "id": "CVE-2026-82731", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T15:13:54.605Z"}}]}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_typescript:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer'"], "packageName": "ash_typescript", "packageURL": "pkg:hex/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/codegen/route_renderer.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer':build_url_template_to_variable/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.Codegen.RouteRenderer'"], "packageName": "ash-project/ash_typescript", "packageURL": "pkg:github/ash-project/ash_typescript", "product": "ash_typescript", "programFiles": ["lib/ash_typescript/typed_controller/codegen/route_renderer.ex"], "programRoutines": [{"name": "'Elixir.AshTypescript.TypedController.Codegen.RouteRenderer':build_url_template_to_variable/4"}], "repo": "https://github.com/ash-project/ash_typescript", "vendor": "ash-project", "versions": [{"lessThan": "5165f752f5f92b755d946f2d1ce750ff69083ffc", "status": "affected", "version": "6669e22ece34b4534e706a46d1842f01b68ee23a", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "URL Redirection to Untrusted Site ('Open Redirect') vulnerability in ash-project ash_typescript allows an attacker who controls a path-parameter value to redirect a generated client's request, and the credentials attached to it, to an unintended route or an external origin.\n\nThe URL builders in lib/ash_typescript/typed_controller/codegen/route_renderer.ex replace each :param placeholder with a bare template interpolation and never call encodeURIComponent, so the value reaches executeTypedControllerRequest raw. A value containing ../ is normalised away by the fetch URL resolver and reaches a different route, while ? or # truncates the path and can smuggle or override query parameters. For a route whose path begins with a parameter, a value such as /evil.example.com/x yields the protocol-relative URL //evil.example.com/x, sending the request and the credentials from TypedControllerConfig to an attacker-controlled host. Nothing constrains the value at runtime: get_path_param_type/2 emits only a TypeScript type, which is erased.\n\nThe query-string path is unaffected, since URLSearchParams.set encodes its own values.\n\nThis issue affects ash_typescript: from 0.15.0 before 0.18.0."}], "id": "CVE-2026-82731", "lastModified": "2026-09-01T16:17:21.657", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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": "LOW", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-82731", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-01T15:13:34.848553Z", "version": "2.0.3"}}]}, "published": "2026-09-01T03:16:52.993", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-82731.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_typescript/commit/5165f752f5f92b755d946f2d1ce750ff69083ffc"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6g23-p936-fm2f"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82731"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/ash-project/ash_typescript/security/advisories/GHSA-6g23-p936-fm2f"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.15.0,0.18.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6669e22ece34b4534e706a46d1842f01b68ee23a,5165f752f5f92b755d946f2d1ce750ff69083ffc)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "ash_typescript", "source": "cna", "vendor": "ash-project"}, "product": "ash_typescript", "vendor": "ash-project"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6669e22ece34b4534e706a46d1842f01b68ee23a,5165f752f5f92b755d946f2d1ce750ff69083ffc)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "ash_typescript", "source": "cna", "vendor": "ash-project"}, "product": "ash_typescript", "vendor": "ash-project"}], "created": "2026-09-01T03:30:04.426542+00:00", "updated": "2026-09-01T14:15:48.255705+00:00", "vendors": ["ash-project", "ash-project$PRODUCT$ash_typescript"]}