Arbitrary Command Execution via File Write Tool in Amazon Kiro IDE
CVE-2026-10591 is an insufficient access control vulnerability in the file write tool of Amazon Kiro IDE before version 0.11. A remote unauthenticated actor can supply crafted instructions that cause the IDE to write attacker-controlled content to execution-sensitive paths within a workspace, including files such as .vscode/tasks.json. Because such files can be automatically acted upon by the development environment when a folder is opened, the flaw can be leveraged to trigger arbitrary command execution. The issue stems from inadequate restrictions on where the file write tool is permitted to write, allowing modification of files that influence task execution behavior.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.