Vulnerability Description
Missing input source validation in the tool authorization prompt in Kiro CLI before 1.28.0 allows a local attacker to execute arbitrary tools, including shell commands, without user approval by crafting content that is piped to kiro-cli via stdin. We recommend you to upgrade to kiro-cli version 1.28.0 or later.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Amazon | Kiro Cli | < 1.28.0 |
Related Weaknesses (CWE)
References
- https://aws.amazon.com/security/security-bulletins/2026-035-aws/Vendor Advisory
- https://kiro.dev/changelog/cli/1-28/Release Notes
FAQ
What is CVE-2026-9255?
CVE-2026-9255 is a vulnerability with a CVSS score of 7.8 (HIGH). Missing input source validation in the tool authorization prompt in Kiro CLI before 1.28.0 allows a local attacker to execute arbitrary tools, including shell commands, without user approval by crafti...
How severe is CVE-2026-9255?
CVE-2026-9255 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9255?
Check the references section above for vendor advisories and patch information. Affected products include: Amazon Kiro Cli.