{"id":"EEF-CVE-2026-78693","summary":"Incomplete redaction re-attaches the original error path in AshGraphql, leaking internal field names","details":"## Summary\n\nGeneration of Error Message Containing Sensitive Information vulnerability in ash-project ash_graphql allows a remote client to read internal field names that an application configured its `error_handler` to redact.\n\nIn `AshGraphql.Errors`, each error is passed to the configured `error_handler` and the returned map is merged with the pre-handler path via `Map.put_new(handled, :path, path)`. Because `put_new` defers to the handler only when the handler itself set `:path`, a sanitizing handler that returns a fresh map or deletes `:path` has that decision reverted. The re-injected path comes from `build_error_path/5`, which falls back to raw internal Ash attribute and argument names when no `field_names` mapping is configured. A validation failure on a non-exposed or nested field therefore returns internal names in the GraphQL error `path`, defeating the application's redaction.\n\nThis issue affects ash_graphql: from 1.9.0 before 1.11.0.","aliases":["CVE-2026-78693","GHSA-ppr2-g9h8-w7qp"],"modified":"2026-09-08T19:15:05.292830779Z","published":"2026-08-30T18:28:35.282Z","database_specific":{"cwe_ids":["CWE-209"],"capec_ids":["CAPEC-54"],"cpe_ids":["cpe:2.3:a:ash-project:ash_graphql:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/ash-project/ash_graphql/security/advisories/GHSA-ppr2-g9h8-w7qp"},{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-78693.html"},{"type":"FIX","url":"https://github.com/ash-project/ash_graphql/commit/78e90d369f09f44c534816de541e60841066a467"},{"type":"PACKAGE","url":"https://hex.pm/packages/ash_graphql"}],"affected":[{"package":{"name":"ash_graphql","ecosystem":"Hex","purl":"pkg:hex/ash_graphql"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.9.0"},{"fixed":"1.11.0"}]}],"versions":["1.10.0","1.10.1","1.9.0","1.9.1","1.9.2","1.9.3","1.9.4"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-78693.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ash-project/ash_graphql","events":[{"introduced":"6d2d8d995906d68cc245d209a9b3f9853405eb61"},{"fixed":"78e90d369f09f44c534816de541e60841066a467"}]}],"versions":["v1.10.1","v1.10.0","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0"],"database_specific":{"source":"https://cna.erlef.org/osv/EEF-CVE-2026-78693.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:L/VI:N/VA:N/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"}]}