CVE-2026-7191Network attack vector

Admin code execution via prototype manipulation

Published Apr 27, 2026 · Updated Apr 27, 2026

Code injection in QnABot on AWS 7.2.4 and earlier allows remote authenticated users to execute code in the Fulfillment Lambda. The conditional-chaining evaluator passes a crafted expression to static-eval, where JavaScript prototype manipulation escapes the intended sandbox. Admin access to Content Designer is required; execution can expose Lambda environment variables, OpenSearch indices, S3 objects, and DynamoDB tables.

CVSS severity8.6
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in QnABot on AWS 7.2.4 and earlier allows remote authenticated users to execute code in the Fulfillment Lambda. The conditional-chaining evaluator passes a crafted expression to static-eval, where JavaScript prototype manipulation escapes the intended sandbox. Admin access to Content Designer is required; execution can expose Lambda environment variables, OpenSearch indices, S3 objects, and DynamoDB tables.

The record

CVE
CVE-2026-7191
Published
Apr 27, 2026
Updated
Apr 27, 2026
Vendor
Amazon Web Services
Product
QnABot on AWS
Classifications
CWE-94, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=7.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Amazon Web Services · QnABot on AWSversion=0 <=7.2.4

Published CVSS scores

8.6Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2Amazon Web ServicesCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo