CVE-2026-77810: Code Injection (CVSS 9.9)

Description

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.

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CVSS v3.1 Score

9.9

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0035

Probability of exploitation

0.28%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-95 CWE-95

References

Other 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

Frequently Asked Questions

What is CVE-2026-77810? +

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. It has a CVSS v3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2026-77810? +

CVE-2026-77810 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0035, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-77810? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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