Authentication Flaw in Loom for AWS Affects AWS Services
CVE-2026-103956
Key Information:
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What is CVE-2026-103956?
CVE-2026-103956 is a significant vulnerability found in the Loom for AWS platform, a tool designed to integrate with various AWS services. The flaw relates to missing authentication for essential functions within the authentication dependency of the software. This oversight allows remote attackers to gain unauthorized super-admin access to the agent control plane of Loom. With this level of access, they can perform critical actions such as registering tool servers, accessing stored integration credentials, and modifying IAM role policies associated with managed agent roles. The security breach is particularly severe in deployments that lack a configured identity provider, as it opens the door to extensive privilege escalation and manipulation of sensitive configurations without any prior authentication.
Potential impact of CVE-2026-103956
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Unauthorized Access and Privilege Escalation: The vulnerability allows attackers to obtain super-admin rights without proper authentication, enabling them to manipulate the system extensively, including the potential for unauthorized access to confidential data and credentials.
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Compromise of IAM Policies: Attackers can rewrite IAM role policies, which can lead to further exploitation within the AWS ecosystem, including the provisioning of unauthorized resources or even complete control over AWS accounts.
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Risk of Data Breaches and System Manipulation: With unrestricted access, malicious actors can exploit the vulnerability to exfiltrate sensitive data or install malicious software, significantly jeopardizing the integrity and security of the entire infrastructure managed through Loom for AWS.
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Affected Version(s)
loom 0 < 1.6.1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.