{"id":"CVE-2026-80223","title":"Incorrect Authorization vulnerability in ash-project ash_graphql allows an authenticated subscriber in one tenant to receive another tenant's records over GraphQL subscriptions.\n\nThe subscription resolver in AshGraphql.Graphql.Resolver a…","summary":"Incorrect Authorization vulnerability in ash-project ash_graphql allows an authenticated subscriber in one tenant to receive another tenant's records over GraphQL subscriptions.\n\nThe subscription resolver in AshGraphql.Graphql.Resolver a…","severity":"none","cwe":["CWE-863"],"published":"2026-08-30","updated":"2026-08-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80223","references":[{"url":"https://cna.erlef.org/cves/CVE-2026-80223.html","label":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db"},{"url":"https://github.com/ash-project/ash_graphql/commit/6e30b8b5a04bdeaed5d7514caa6b2d056d8d993e","label":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db"},{"url":"https://github.com/ash-project/ash_graphql/security/advisories/GHSA-rcqc-59g2-gjg2","label":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db"},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-80223","label":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}],"tags":["nvd"],"ingestedAt":"2026-08-31T02:00:58.101Z","epss":0.00246,"epssPercentile":0.16152,"slug":"CVE-2026-80223","body":"## Overview\n\nIncorrect Authorization vulnerability in ash-project ash_graphql allows an authenticated subscriber in one tenant to receive another tenant's records over GraphQL subscriptions.\n\nThe subscription resolver in AshGraphql.Graphql.Resolver authorizes each notification payload in memory: its fast path calls Ash.can/3 with run_queries?: false, which evaluates the read policy filter against the in-memory record via Ash.Expr.eval/2 and never issues a query. Ash applies multitenancy at query-build and data-layer-prefix time, not inside query.filter, so the evaluated policy carries no tenant condition and a tenant-B notification routed to a tenant-A subscriber is emitted whenever the policy filter is true. The single-notification clause has no tenant guard at all, and the batched clause checks only the head of the notification list, so non-head entries authorize purely in memory. A tenant-scoped read is reached only when filter evaluation fails.\n\nThis issue affects ash_graphql: from 1.4.0 before 1.11.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}