{"id":"CVE-2026-82722","state":"PUBLISHED","title":"AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)","description":"Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.\n\nTwo LiveView event handlers interned atoms from unvalidated client input: AshAdmin.PageLive's set_actor built modules from the resource/domain payload with Module.concat/1, and AshAdmin.Components.Resource.Show's calculate converted every submitted form key with String.to_atom/1. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted resource/domain against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.\n\nThis issue affects ash_admin: from 0.1.0 before 1.3.1.","publishedAt":"2026-08-31T02:22:15.099Z","updatedAt":"2026-08-31T16:07:01.861Z","severity":{"score":8.3,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","source":"EEF"},"assigner":"EEF","products":["ash-project ash_admin"],"affected":[{"vendor":"ash-project","product":"ash_admin","packageName":"ash_admin","packageURL":"pkg:hex/ash_admin","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"1.3.1","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshAdmin.PageLive'","'Elixir.AshAdmin.Components.Resource.Show'"],"programFiles":["lib/ash_admin/pages/page_live.ex","lib/ash_admin/components/resource/show.ex"],"programRoutines":[{"name":"'Elixir.AshAdmin.PageLive':handle_event/3"},{"name":"'Elixir.AshAdmin.Components.Resource.Show':handle_event/3"}],"repo":"https://github.com/ash-project/ash_admin"},{"vendor":"ash-project","product":"ash_admin","packageName":"ash-project/ash_admin","packageURL":"pkg:github/ash-project/ash_admin","defaultStatus":"unaffected","versions":[{"version":"98b03baa8422b94dd13e305bf08b8ee3f7232c7b","status":"affected","lessThan":"731dffa09416d68f4ad3a0b6ee146b285ca0083b","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshAdmin.PageLive'","'Elixir.AshAdmin.Components.Resource.Show'"],"programFiles":["lib/ash_admin/pages/page_live.ex","lib/ash_admin/components/resource/show.ex"],"programRoutines":[{"name":"'Elixir.AshAdmin.PageLive':handle_event/3"},{"name":"'Elixir.AshAdmin.Components.Resource.Show':handle_event/3"}],"repo":"https://github.com/ash-project/ash_admin"}],"references":["https://github.com/ash-project/ash_admin/security/advisories/GHSA-wcr6-9rrw-5jhv","https://cna.erlef.org/cves/CVE-2026-82722.html","https://osv.dev/vulnerability/EEF-CVE-2026-82722","https://github.com/ash-project/ash_admin/commit/731dffa09416d68f4ad3a0b6ee146b285ca0083b"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/82xxx/CVE-2026-82722.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-82722","state":"PUBLISHED","datePublished":"2026-08-31T02:22:15.099Z","dateUpdated":"2026-08-31T16:07:01.861Z","assignerShortName":"EEF","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateReserved":"2026-08-31T00:59:08.959Z"},"containers":{"cna":{"title":"AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)","descriptions":[{"lang":"en","value":"Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.\n\nTwo LiveView event handlers interned atoms from unvalidated client input: AshAdmin.PageLive's set_actor built modules from the resource/domain payload with Module.concat/1, and AshAdmin.Components.Resource.Show's calculate converted every submitted form key with String.to_atom/1. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted resource/domain against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.\n\nThis issue affects ash_admin: from 0.1.0 before 1.3.1."}],"affected":[{"vendor":"ash-project","product":"ash_admin","packageName":"ash_admin","packageURL":"pkg:hex/ash_admin","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"1.3.1","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshAdmin.PageLive'","'Elixir.AshAdmin.Components.Resource.Show'"],"programFiles":["lib/ash_admin/pages/page_live.ex","lib/ash_admin/components/resource/show.ex"],"programRoutines":[{"name":"'Elixir.AshAdmin.PageLive':handle_event/3"},{"name":"'Elixir.AshAdmin.Components.Resource.Show':handle_event/3"}],"repo":"https://github.com/ash-project/ash_admin"},{"vendor":"ash-project","product":"ash_admin","packageName":"ash-project/ash_admin","packageURL":"pkg:github/ash-project/ash_admin","defaultStatus":"unaffected","versions":[{"version":"98b03baa8422b94dd13e305bf08b8ee3f7232c7b","status":"affected","lessThan":"731dffa09416d68f4ad3a0b6ee146b285ca0083b","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshAdmin.PageLive'","'Elixir.AshAdmin.Components.Resource.Show'"],"programFiles":["lib/ash_admin/pages/page_live.ex","lib/ash_admin/components/resource/show.ex"],"programRoutines":[{"name":"'Elixir.AshAdmin.PageLive':handle_event/3"},{"name":"'Elixir.AshAdmin.Components.Resource.Show':handle_event/3"}],"repo":"https://github.com/ash-project/ash_admin"}],"references":[{"url":"https://github.com/ash-project/ash_admin/security/advisories/GHSA-wcr6-9rrw-5jhv","tags":["vendor-advisory","related"]},{"url":"https://cna.erlef.org/cves/CVE-2026-82722.html","tags":["related"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-82722","tags":["related"]},{"url":"https://github.com/ash-project/ash_admin/commit/731dffa09416d68f4ad3a0b6ee146b285ca0083b","tags":["patch"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"EEF","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateUpdated":"2026-08-31T02:22:15.099Z"},"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.1","versionStartIncluding":"0.1.0","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":"Zach Daniel / Ash Project"},{"lang":"en","type":"coordinator","value":"Jonatan Männchen / EEF"}],"impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/ash-project/ash_admin/security/advisories/GHSA-wcr6-9rrw-5jhv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-31T16:05:51.895740Z","id":"CVE-2026-82722","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-31T16:07:01.861Z"}}]}}}