{"id":"EEF-CVE-2026-78228","summary":"Unbounded handle_error recursion enables denial of service in AshOban triggers","details":"## Summary\n\nUncontrolled Recursion vulnerability in ash-project ash_oban allows a user who can drive a trigger's `on_error` action to fail on the final attempt to exhaust worker CPU and memory, denying service.\n\nThe generated worker's atomic `handle_error/4` runs the trigger's `on_error` action on a job's final attempt inside a `rescue` that, when the action itself raises, calls `handle_error/4` again with the same job. The job's `attempt` still equals `max_attempts`, so it re-enters the same clause and re-runs the failing action, with no exit. Any deterministic `on_error` failure (a data-layer outage, a misconfigured action, or a record the action rejects) loops forever; because the recursive call is not in tail position, each iteration retains a formatted stacktrace and the process heap grows without bound while the failing statement is re-issued against the data layer until the runtime kills the worker.\n\nThis issue affects ash_oban: from 0.8.0-rc.1 before 0.8.14.\n\n## Configurations\n\nA trigger must declare an `on_error` action and run through the atomic worker branch. An attacker needs only to drive that `on_error` action into a deterministic failure (for example by pushing the record into a state the action rejects) and let the job reach its final attempt.","aliases":["CVE-2026-78228","GHSA-94p7-498r-mrhp"],"modified":"2026-09-08T03:30:04.037552006Z","published":"2026-08-30T11:51:49.621Z","database_specific":{"cpe_ids":["cpe:2.3:a:ash-project:ash_oban:*:*:*:*:*:*:*:*"],"cwe_ids":["CWE-674"],"capec_ids":["CAPEC-130"]},"references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash_oban/security/advisories/GHSA-94p7-498r-mrhp"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-78228.html"},{"type":"FIX","url":"https://github.com/ash-project/ash_oban/commit/851cd0e76ed882bf736fc48d10f96d037e26b5f0"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash_oban"}],"affected":[{"package":{"name":"ash_oban","ecosystem":"Hex","purl":"pkg:hex/ash_oban"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.8.0-rc.1"},{"fixed":"0.8.14"}]}],"versions":["0.8.0-rc.1","0.8.1","0.8.10","0.8.11","0.8.12","0.8.13","0.8.2","0.8.3","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.8.9"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-78228.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ash-project/ash_oban","events":[{"introduced":"5d117ed2006df7277561c69dbfd39281da6ace9f"},{"fixed":"851cd0e76ed882bf736fc48d10f96d037e26b5f0"}]}],"versions":["v0.8.13","v0.8.12","v0.8.11","v0.8.10","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0-rc.1"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-78228.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}],"credits":[{"name":"Peter Ullrich","type":"FINDER"},{"name":"Peter Ullrich","type":"REPORTER"},{"name":"Zach Daniel / Ash Project","type":"REMEDIATION_DEVELOPER"},{"name":"Jonatan Männchen / EEF","type":"COORDINATOR"}]}