CVE-2026-15895
Bulletin ID: 2026-057-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 07/15/2026 12:00 PM PDT Description: jsii-diff is a command line tool to compare the API differences between two jsii assemblies, and report errors if there are backwards-incompatible changes to the API. We identified CVE-2026-15895, an issue where specially formatted command line arguments can be used to execute shell commands via this tool. Impacted versions: < 1.131.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
CSIRTS triage
- What
- Specially formatted command line arguments can be used to execute shell commands via jsii-diff.
- Who is affected
- Users of jsii-diff versions below 1.131.0.
- Urgency
- Attention is required to prevent potential exploitation.
- Action
- Update to version 1.131.0 or later.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.63% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownCVE-2026-15895: OS command injection in jsii-diff in AWS jsiiaws · 2026-07-16
- highCVE-2026-15895: OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 migh…nvd · 2026-07-15
External references
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[](https://www.csirts.com/cve/CVE-2026-15895)