Vulnerability · Published Apr 27, 2026 · Assigned by AMZN
CVE-2026-7191Arbitrary Code Execution via Sandbox Bypass in the open source solution QnABot on AWS
High 7.2
In plain English
A high-severity code injection in QnABot on AWS from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AWS | QnABot on AWS | 0 – through 7.2.4 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H