CVE-2026-77810Network attack vector

Lambda property access via unneutralized passthrough queries

Published Aug 21, 2026 · Updated Aug 21, 2026

Eval injection in Amazon Athena Neptune connector 2024.15.1 through 2026.28.1 allows remote authenticated users to access Lambda properties. The connector passes query text into dynamic evaluation without neutralizing directives; AWS has not disclosed the exact function or evaluation path. Access to Neptune through Athena Federated Query and permission to start queries are required, exposing properties of the connector's compute Lambda.

CVSS severity9.4
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Eval injection in Amazon Athena Neptune connector 2024.15.1 through 2026.28.1 allows remote authenticated users to access Lambda properties. The connector passes query text into dynamic evaluation without neutralizing directives; AWS has not disclosed the exact function or evaluation path. Access to Neptune through Athena Federated Query and permission to start queries are required, exposing properties of the connector's compute Lambda.

The record

CVE
CVE-2026-77810
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Amazon Web Services
Product
Amazon Athena Neptune connector
Classifications
CWE-95, CAPEC-35, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2024.15.1 <=2026.28.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Amazon Web Services · Amazon Athena Neptune connectorversion=2024.15.1 <=2026.28.1

Published CVSS scores

9.4Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.9Amazon Web ServicesCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CAPEC-35Leverage Executable Code in Non-Executable Files
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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