CVE-2026-81633

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Source
https://cve.org/CVERecord?id=CVE-2026-81633
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81633.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-81633
Aliases
Published
2026-08-30T18:22:07.096Z
Modified
2026-09-01T03:46:19.185366286Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Unhandled KeyError in AshGraphql relay node resolution crashes queries via an unknown type segment
Details

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.resolvenode/2 decodes the client-supplied global ID with decoderelayid/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!(typetodomainandresourcemap, 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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81633.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "365b3aedc6b36f020e6a2c7dce63fa569243bc4e"
                },
                {
                    "fixed": "c8863ed8e5c21f1bfb6125f1d24e78443dfc6351"
                }
            ]
        }
    ],
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-20"
    ]
}
References

Affected packages

Git / github.com/ash-project/ash_graphql

Affected ranges

Type
GIT
Repo
https://github.com/ash-project/ash_graphql
Events
Introduced
4c1f8a2d1a3de21d8bb141f6349f82e4f1c88f4a
Fixed
4e2c5476ecfd2c701488627ee46e6eefc58c982e
Fixed
c8863ed8e5c21f1bfb6125f1d24e78443dfc6351
Database specific
Show details 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0.27.0"
        },
        {
            "fixed": "1.11.0"
        }
    ]
}

Affected versions

1.*
1.0.0
v0.*
v0.27.0
v0.27.1
v0.28.0
v1.*
v1.0.0
v1.0.0-rc.0
v1.0.0-rc.1
v1.0.0-rc.2
v1.0.0-rc.3
v1.0.0-rc.4
v1.0.0-rc.5
v1.0.1
v1.1.1
v1.10.0
v1.10.1
v1.2.1
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.4.4
v1.4.6
v1.4.7
v1.5.0
v1.5.1
v1.6.0
v1.7.0
v1.7.1
v1.7.10
v1.7.11
v1.7.12
v1.7.13
v1.7.14
v1.7.15
v1.7.16
v1.7.17
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.7.7
v1.7.8
v1.7.9
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.8.5
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81633.json"