CVE-2026-7191

HIGH

Arbitrary Code Execution via Sandbox Bypass in the open source solution QnABot on AWS

Title source: cna
STIX 2.1

Description

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.

Scores

CVSS v3 7.2
EPSS 0.0007
EPSS Percentile 21.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (1)
AWS/QnABot on AWS < 7.2.4
Published Apr 27, 2026
Tracked Since Apr 28, 2026