Server-Side Request Forgery in Loom for AWS by AWS Labs
CVE-2026-103958

8.3HIGH

Key Information:

Vendor

Aws

Status
Loom
Vendor
CVE Published:
2 October 2026

What is CVE-2026-103958?

A security issue exists in Loom for AWS that allows authenticated remote users to perform server-side request forgery, potentially exposing sensitive credentials associated with the application's container role. This flaw can be exploited via specially crafted connection addresses during the registration, updating, or testing of tool servers or remote agents, enabling unauthorized access to responses from arbitrary internal network locations. Users are advised to upgrade to version 1.7.0 or later to mitigate this risk.

Affected Version(s)

loom 0 < 1.7.0

References

https://github.com/awslabs/loom/releases/tag/v1.7.0
release-notespatch
https://aws.amazon.com/security/security-bulletins/2026-1...
vendor-advisory
https://github.com/awslabs/loom/security/advisories/GHSA-...
third-party-advisory

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.