CVE-2026-7191Arbitrary Code Execution via Sandbox Bypass in the open source solution QnABot on AWS
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- AMZN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Apr 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
AWS QnABot on AWS aws:qnabot_on_aws (from the name) | through 7.2.4 | CNA record |
References
- https://github.com/aws-solutions/qnabot-on-aws/releases/tag/v7.3.0patch
- https://aws.amazon.com/security/security-bulletins/2026-020-aws/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.