{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82724", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-31T00:59:08.960Z", "datePublished": "2026-08-31T03:07:57.455Z", "dateUpdated": "2026-08-31T15:54:49.058Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPhoenix.LiveView.SubdomainHook'"], "packageName": "ash_phoenix", "packageURL": "pkg:hex/ash_phoenix", "product": "ash_phoenix", "programFiles": ["lib/ash_phoenix/live_view/subdomain_hook.ex"], "programRoutines": [{"name": "'Elixir.AshPhoenix.LiveView.SubdomainHook':on_mount/4"}], "repo": "https://github.com/ash-project/ash_phoenix", "vendor": "ash-project", "versions": [{"lessThan": "2.3.25", "status": "affected", "version": "2.1.26", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPhoenix.LiveView.SubdomainHook'"], "packageName": "ash-project/ash_phoenix", "packageURL": "pkg:github/ash-project/ash_phoenix", "product": "ash_phoenix", "programFiles": ["lib/ash_phoenix/live_view/subdomain_hook.ex"], "programRoutines": [{"name": "'Elixir.AshPhoenix.LiveView.SubdomainHook':on_mount/4"}], "repo": "https://github.com/ash-project/ash_phoenix", "vendor": "ash-project", "versions": [{"lessThan": "b396e1aa5c6bdec39255f19cf938b539e6d28b71", "status": "affected", "version": "9a5ea4d377bc263de321d79574872a3dfc4fb541", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The application uses <code>AshPhoenix.LiveView.SubdomainHook</code> with a <code>handle_subdomain</code> callback as a tenant-scoped authorization gate.</p>"}, {"base64": false, "type": "text/markdown", "value": "The application uses `AshPhoenix.LiveView.SubdomainHook` with a `handle_subdomain` callback as a tenant-scoped authorization gate."}], "value": "The application uses AshPhoenix.LiveView.SubdomainHook with a handle_subdomain callback as a tenant-scoped authorization gate."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.25", "versionStartIncluding": "2.1.26", "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": "Zach Daniel / 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_phoenix invokes the <code>SubdomainHook</code> authorization callback with a <code>nil</code> tenant, so tenant-scoped access checks never see the tenant they are meant to enforce.</p>\n<p><code>AshPhoenix.LiveView.SubdomainHook.on_mount/4</code> attached a <code>handle_params</code> hook to assign the tenant and then immediately called <code>handle_subdomain</code> in the same <code>on_mount</code>. The tenant assign is only written when LiveView later runs <code>handle_params</code>, strictly after <code>on_mount</code> returns, so <code>handle_subdomain</code> read an unset assign and ran as <code>apply(m, f, [socket, nil | a])</code>. A consumer gate that halts when the user does not belong to the tenant instead evaluated <code>nil</code>, either crashing or taking a permissive branch, and it was never re-run once the real subdomain was assigned or on later navigations. The fix runs <code>handle_subdomain</code> inside the <code>handle_params</code> hook with the real tenant on every navigation.</p>\n<p>This issue affects ash_phoenix: from 2.1.26 before 2.3.25.</p>"}, {"base64": false, "type": "text/markdown", "value": "Incorrect Authorization vulnerability in ash-project ash_phoenix invokes the `SubdomainHook` authorization callback with a `nil` tenant, so tenant-scoped access checks never see the tenant they are meant to enforce.\n\n`AshPhoenix.LiveView.SubdomainHook.on_mount/4` attached a `handle_params` hook to assign the tenant and then immediately called `handle_subdomain` in the same `on_mount`. The tenant assign is only written when LiveView later runs `handle_params`, strictly after `on_mount` returns, so `handle_subdomain` read an unset assign and ran as `apply(m, f, [socket, nil | a])`. A consumer gate that halts when the user does not belong to the tenant instead evaluated `nil`, either crashing or taking a permissive branch, and it was never re-run once the real subdomain was assigned or on later navigations. The fix runs `handle_subdomain` inside the `handle_params` hook with the real tenant on every navigation.\n\nThis issue affects ash_phoenix: from 2.1.26 before 2.3.25."}], "value": "Incorrect Authorization vulnerability in ash-project ash_phoenix invokes the SubdomainHook authorization callback with a nil tenant, so tenant-scoped access checks never see the tenant they are meant to enforce.\n\nAshPhoenix.LiveView.SubdomainHook.on_mount/4 attached a handle_params hook to assign the tenant and then immediately called handle_subdomain in the same on_mount. The tenant assign is only written when LiveView later runs handle_params, strictly after on_mount returns, so handle_subdomain read an unset assign and ran as apply(m, f, [socket, nil | a]). A consumer gate that halts when the user does not belong to the tenant instead evaluated nil, either crashing or taking a permissive branch, and it was never re-run once the real subdomain was assigned or on later navigations. The fix runs handle_subdomain inside the handle_params hook with the real tenant on every navigation.\n\nThis issue affects ash_phoenix: from 2.1.26 before 2.3.25."}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 7.6, "baseSeverity": "HIGH", "privilegesRequired": "LOW", "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:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "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": "2026-08-31T03:07:57.455Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-39c8-xcwr-gqff"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-82724.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82724"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash_phoenix/commit/b396e1aa5c6bdec39255f19cf938b539e6d28b71"}], "source": {"discovery": "EXTERNAL"}, "title": "Broken access control in AshPhoenix SubdomainHook via a nil tenant in handle_subdomain"}, "adp": [{"references": [{"url": "https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-39c8-xcwr-gqff", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-31T15:53:54.952218Z", "id": "CVE-2026-82724", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-31T15:54:49.058Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPhoenix.LiveView.SubdomainHook'"], "packageName": "ash_phoenix", "packageURL": "pkg:hex/ash_phoenix", "product": "ash_phoenix", "programFiles": ["lib/ash_phoenix/live_view/subdomain_hook.ex"], "programRoutines": [{"name": "'Elixir.AshPhoenix.LiveView.SubdomainHook':on_mount/4"}], "repo": "https://github.com/ash-project/ash_phoenix", "vendor": "ash-project", "versions": [{"lessThan": "2.3.25", "status": "affected", "version": "2.1.26", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPhoenix.LiveView.SubdomainHook'"], "packageName": "ash-project/ash_phoenix", "packageURL": "pkg:github/ash-project/ash_phoenix", "product": "ash_phoenix", "programFiles": ["lib/ash_phoenix/live_view/subdomain_hook.ex"], "programRoutines": [{"name": "'Elixir.AshPhoenix.LiveView.SubdomainHook':on_mount/4"}], "repo": "https://github.com/ash-project/ash_phoenix", "vendor": "ash-project", "versions": [{"lessThan": "b396e1aa5c6bdec39255f19cf938b539e6d28b71", "status": "affected", "version": "9a5ea4d377bc263de321d79574872a3dfc4fb541", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect Authorization vulnerability in ash-project ash_phoenix invokes the SubdomainHook authorization callback with a nil tenant, so tenant-scoped access checks never see the tenant they are meant to enforce.\n\nAshPhoenix.LiveView.SubdomainHook.on_mount/4 attached a handle_params hook to assign the tenant and then immediately called handle_subdomain in the same on_mount. The tenant assign is only written when LiveView later runs handle_params, strictly after on_mount returns, so handle_subdomain read an unset assign and ran as apply(m, f, [socket, nil | a]). A consumer gate that halts when the user does not belong to the tenant instead evaluated nil, either crashing or taking a permissive branch, and it was never re-run once the real subdomain was assigned or on later navigations. 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{"created": "2026-08-31T04:30:18.910663+00:00", "updated": "2026-08-31T04:30:18.910669+00:00", "vendors": []}