[ CVE-2026-103956 · Published 2 Oct 2026 ]
Vulnerability in AWS loom
CVSS 10.0
EPSS <1%No fix listed yet
[ Why it matters ]Priority signals
- Critical severity: CVSS 10.0
[ Description ]Official description
Missing authentication for critical function in the authentication dependency in Loom for AWS before 1.6.1 allowed remote actors to obtain super-admin authority over the agent control plane, including registering tool servers, reading stored integration credentials, and rewriting the IAM role policies attached to managed agent roles, via any request to the application API in a deployment where no identity provider is configured. To remediate this issue, users should upgrade to version 1.6.1 or later.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.