CVE-2026-5423 (GCVE-0-2026-5423)

Vulnerability from cvelistv5 – Published: 2026-08-06 15:15 – Updated: 2026-08-06 15:45
VLAI
Title
Subscription Authentication Bypass via Unverified connectionParams.jwt
Summary
@neo4j/graphql library versions prior to 7.5.6 fail to verify the authenticity of a client-supplied, pre-decoded JWT object passed through GraphQL subscription connectionParams. As a result, any unauthenticated remote client that can open a GraphQL-over-WebSocket connection can forge arbitrary JWT claims (e.g. sub, roles) in connectionParams.jwt and have them accepted as authenticated identity for the purposes of @authentication and @subscriptionsAuthorization directive evaluation. This allows a fully unauthenticated attacker to receive subscription events that should be restricted to specific authenticated roles/users. Upgrade the library to versions 7.5.6+ or 5.12.14+. v6 is end-of-life and will not receive a fix.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-302 - Authentication bypass by Assumed-Immutable data
Assigner
References
Impacted products
Vendor Product Version
neo4j graphql Affected: 7.0.0 , < 7.5.6 (semver)
Affected: 5.0.0 , < 5.12.14 (semver)
Affected: 6.0.0 , ≤ 6.6.4 (semver)
Create a notification for this product.
Credits
EQSTLab (https://github.com/EQSTLab)
Show details on NVD website

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