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

> CVE-2026-7191: Arbitrary Code Execution via Sandbox Bypass in the open source solution QnABot on AWS. CVSS 7.2 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-7191
Last updated: 2026-06-17T11:01:58Z

- Published: 2026-04-27 20:08 UTC · Updated: 2026-06-17 11:01 UTC · Assigner: AMZN
- CVSS: 7.2 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.43%, 37th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-94

## 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 vendors and products

- AWS: QnABot on AWS

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-7191)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-7191)
- [https://aws.amazon.com/security/security-bulletins/2026-020-aws/](https://aws.amazon.com/security/security-bulletins/2026-020-aws/)
- [https://github.com/aws-solutions/qnabot-on-aws/releases/tag/v7.3.0](https://github.com/aws-solutions/qnabot-on-aws/releases/tag/v7.3.0)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-7191 · Markdown: https://rewindex.com/cve/CVE-2026-7191.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-7191 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:40.808Z