CVE-2026-81633
Medium · CVSS 6.9Published 2026-08-30
CVSS
6.9
Medium
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-81633?
Improper Input Validation vulnerability in ash-project ash_graphql allows an unauthenticated client to crash a relay node(id: ...) query with an unhandled KeyError. AshGraphql.Graphql.Resolver.resolve_node/2 decodes the client-supplied global ID with decode_relay_id/1, which only base64-decodes the string and splits it on : without validating the type segment. The decoded type is passed straight to Map.fetch!(type_to_domain_and_resource_map, type). Because fetch! raises on a missing key, a relay ID whose type segment is a valid atom that is not a relay-exposed type aborts the resolver before its resolve/2 clauses and their rescue handlers run, so the error never becomes a GraphQL error and may expose a stacktrace. Common resource names are easy to guess. The fix uses Map.fetch/2 and returns an Invalid node id error for unknown types. This issue affects ash_graphql: from 0.27.0 before 1.11.0.
CVSS Score Explained
CVSS 6.9 is Medium severity. Exploitation usually requires some specific conditions (local access, user interaction, or a particular config). Still worth patching in your next maintenance window.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://cna.erlef.org/cves/CVE-2026-81633.html
- ›https://github.com/ash-project/ash_graphql/commit/c8863ed8e5c21f1bfb6125f1d24e78443dfc6351
- ›https://github.com/ash-project/ash_graphql/security/advisories/GHSA-mrgv-g7gf-r96h
- ›https://osv.dev/vulnerability/EEF-CVE-2026-81633
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