{"id":"CVE-2026-67585","state":"PUBLISHED","title":"Atom Exhaustion via _entities Representation Keys in DivvyPayHQ absinthe_federation","description":"Allocation of Resources Without Limits or Throttling vulnerability in DivvyPayHQ absinthe_federation allows an unauthenticated remote attacker to abort the Erlang VM via crafted _entities representation keys.\n\nEvery key of every object in the representations argument of the federation-mandated _entities field is converted with String.to_atom/1 by convert_key/2 in lib/absinthe/federation/schema/entities_field.ex. representations is typed as the open-ended _Any scalar, so its keys bypass schema coercion and the attacker names them freely. Atoms are never garbage collected and the BEAM atom table is hard-capped (about 1,048,576 entries by default), so one request carrying tens of thousands of unique keys creates that many permanent atoms and a handful of such requests exhausts the table and aborts the node. The impact is confined to availability: no data is read or altered, and recovery requires restarting the application.\n\nThis issue affects absinthe_federation: from 0.1.0 before 0.9.3.","publishedAt":"2026-08-07T16:42:22.653Z","updatedAt":"2026-08-07T18:12:59.050Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"EEF"},"assigner":"EEF","products":["DivvyPayHQ absinthe_federation"],"affected":[{"vendor":"DivvyPayHQ","product":"absinthe_federation","packageName":"absinthe_federation","packageURL":"pkg:hex/absinthe_federation","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"0.9.3","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*"],"modules":["'Elixir.Absinthe.Federation.Schema.EntitiesField'"],"programFiles":["lib/absinthe/federation/schema/entities_field.ex"],"programRoutines":[{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}],"repo":"https://github.com/DivvyPayHQ/absinthe_federation"},{"vendor":"DivvyPayHQ","product":"absinthe_federation","packageName":"DivvyPayHQ/absinthe_federation","packageURL":"pkg:github/DivvyPayHQ/absinthe_federation","defaultStatus":"unaffected","versions":[{"version":"640a234a26b2d6fe5d9d21e00e5f4fce5645c0bf","status":"affected","lessThan":"c3838cda2a7f65c4893291668c223b0d6acf4516","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*"],"modules":["'Elixir.Absinthe.Federation.Schema.EntitiesField'"],"programFiles":["lib/absinthe/federation/schema/entities_field.ex"],"programRoutines":[{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}],"repo":"https://github.com/DivvyPayHQ/absinthe_federation"}],"references":["https://github.com/DivvyPayHQ/absinthe_federation/security/advisories/GHSA-55hv-mwvr-phf3","https://cna.erlef.org/cves/CVE-2026-67585.html","https://osv.dev/vulnerability/EEF-CVE-2026-67585","https://github.com/DivvyPayHQ/absinthe_federation/commit/c3838cda2a7f65c4893291668c223b0d6acf4516"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/67xxx/CVE-2026-67585.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67585","state":"PUBLISHED","datePublished":"2026-08-07T16:42:22.653Z","dateUpdated":"2026-08-07T18:12:59.050Z","assignerShortName":"EEF","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateReserved":"2026-08-07T10:15:01.514Z"},"containers":{"cna":{"title":"Atom Exhaustion via _entities Representation Keys in DivvyPayHQ absinthe_federation","descriptions":[{"lang":"en","value":"Allocation of Resources Without Limits or Throttling vulnerability in DivvyPayHQ absinthe_federation allows an unauthenticated remote attacker to abort the Erlang VM via crafted _entities representation keys.\n\nEvery key of every object in the representations argument of the federation-mandated _entities field is converted with String.to_atom/1 by convert_key/2 in lib/absinthe/federation/schema/entities_field.ex. representations is typed as the open-ended _Any scalar, so its keys bypass schema coercion and the attacker names them freely. Atoms are never garbage collected and the BEAM atom table is hard-capped (about 1,048,576 entries by default), so one request carrying tens of thousands of unique keys creates that many permanent atoms and a handful of such requests exhausts the table and aborts the node. The impact is confined to availability: no data is read or altered, and recovery requires restarting the application.\n\nThis issue affects absinthe_federation: from 0.1.0 before 0.9.3."}],"affected":[{"vendor":"DivvyPayHQ","product":"absinthe_federation","packageName":"absinthe_federation","packageURL":"pkg:hex/absinthe_federation","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","lessThan":"0.9.3","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*"],"modules":["'Elixir.Absinthe.Federation.Schema.EntitiesField'"],"programFiles":["lib/absinthe/federation/schema/entities_field.ex"],"programRoutines":[{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}],"repo":"https://github.com/DivvyPayHQ/absinthe_federation"},{"vendor":"DivvyPayHQ","product":"absinthe_federation","packageName":"DivvyPayHQ/absinthe_federation","packageURL":"pkg:github/DivvyPayHQ/absinthe_federation","defaultStatus":"unaffected","versions":[{"version":"640a234a26b2d6fe5d9d21e00e5f4fce5645c0bf","status":"affected","lessThan":"c3838cda2a7f65c4893291668c223b0d6acf4516","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*"],"modules":["'Elixir.Absinthe.Federation.Schema.EntitiesField'"],"programFiles":["lib/absinthe/federation/schema/entities_field.ex"],"programRoutines":[{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':resolver/3"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_keys_to_atom/2"},{"name":"'Elixir.Absinthe.Federation.Schema.EntitiesField':convert_key/2"}],"repo":"https://github.com/DivvyPayHQ/absinthe_federation"}],"references":[{"url":"https://github.com/DivvyPayHQ/absinthe_federation/security/advisories/GHSA-55hv-mwvr-phf3","tags":["vendor-advisory","related"]},{"url":"https://cna.erlef.org/cves/CVE-2026-67585.html","tags":["related"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-67585","tags":["related"]},{"url":"https://github.com/DivvyPayHQ/absinthe_federation/commit/c3838cda2a7f65c4893291668c223b0d6acf4516","tags":["patch"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","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:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","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":"2026-08-07T16:42:22.653Z"},"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:divvypayhq:absinthe_federation:*:*:*:*:*:*:*:*","versionEndExcluding":"0.9.3","versionStartIncluding":"0.1.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Doruk Gurleyen"},{"lang":"en","type":"analyst","value":"Jonatan Männchen / EEF"}],"impacts":[{"capecId":"CAPEC-130","descriptions":[{"lang":"en","value":"CAPEC-130 Excessive Allocation"}]}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-07T18:12:41.815038Z","id":"CVE-2026-67585","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-07T18:12:59.050Z"}}]}}}