{"id":"CVE-2026-67585","summary":"Atom Exhaustion via _entities Representation Keys in DivvyPayHQ absinthe_federation","details":"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.","aliases":["EEF-CVE-2026-67585","GHSA-55hv-mwvr-phf3"],"modified":"2026-08-12T03:30:16.597555980Z","published":"2026-08-07T16:42:22.653Z","database_specific":{"cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67585.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"640a234a26b2d6fe5d9d21e00e5f4fce5645c0bf"},{"fixed":"c3838cda2a7f65c4893291668c223b0d6acf4516"}]}],"cna_assigner":"EEF"},"references":[{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-67585.html"},{"type":"WEB","url":"https://github.com"},{"type":"WEB","url":"https://osv.dev/vulnerability/EEF-CVE-2026-67585"},{"type":"WEB","url":"https://repo.hex.pm"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67585.json"},{"type":"ADVISORY","url":"https://github.com/DivvyPayHQ/absinthe_federation/security/advisories/GHSA-55hv-mwvr-phf3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67585"},{"type":"FIX","url":"https://github.com/DivvyPayHQ/absinthe_federation/commit/c3838cda2a7f65c4893291668c223b0d6acf4516"},{"type":"PACKAGE","url":"https://github.com/DivvyPayHQ/absinthe_federation"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/divvypayhq/absinthe_federation","events":[{"introduced":"2587b230b91fb0e1e22d747014f9b44d0e3bef2d"},{"fixed":"c3838cda2a7f65c4893291668c223b0d6acf4516"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0.1.0"},{"fixed":"0.9.3"}]}}],"versions":["v0.9.2","v0.9.1","v0.9.0","v0.8.0","v0.7.1","v0.7.0","v0.6.1","v0.6.0","v0.5.4","v0.5.3","v0.5.2","v0.5.0","v0.4.2","v0.4.1","v0.3.2","v0.3.1","v0.3.0","v0.2.53","v0.2.52","v0.2.51","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.2.0","v0.1.9","v0.1.8","v0.1.7","v0.1.6","v0.1.5","v0.1.4","v0.1.3","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67585.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}