CVE-2026-77810criticalCWE-95

CVE-2026-77810: critical vulnerability in AWS Athena Federated Query Neptune Connector

Code Injection via Gremlin Query Passthrough in Amazon Athena Neptune Connector

Published 21 Aug 2026 · Updated 27 Aug 2026

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.4epss 0.6%

In the Neptune connector, a user with access to Neptune through Athena Federated Query could gain access to properties in the Lambda supplying the compute for the connector. To remediate this issue, users should upgrade to aws-athena-query-federation v2026.30.1 or later.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Affected products

AWS · Athena Federated Query Neptune Connector

References

https://aws.amazon.com/security/security-bulletins/2026-087-aws/https://github.com/awslabs/aws-athena-query-federation/releases/tag/v2026.30.1 https://github.com/awslabs/aws-athena-query-federation/security/advisories/GHSA-v7c2-5wfg-qg44