CVE-2026-7191 HIGH

CVE-2026-7191: Arbitrary Code Execution via Sandbox Bypass in the open source solution QnABot on AWS

Vendor Aws
Product QnABot on AWS
Weakness CWE-94 · Code injection
Published April 27, 2026
Last update April 28, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Improper use of the static-eval npm package in the open source solution qnabot-on-aws versions 7.2.4 and earlier may allow an authenticated administrator to execute arbitrary code within the fulfillment Lambda execution context by injecting a crafted conditional chaining expression via the Content Designer interface, which bypasses the intended expression sandbox through JavaScript prototype manipulation. This may grant direct access to backend resources (Lambda environment variables, OpenSearch indices, S3 objects, DynamoDB tables) that are not exposed through normal administrative interfaces. We recommend you upgrade to version 7.3.0 or above.

Key dates

02Disclosure timeline

April 27, 2026 CVE published
April 28, 2026 Record updated