Vulnerability · Published Oct 2, 2026 · Assigned by AMZN

CVE-2026-103958Server-side request forgery in the tool server and remote agent connection handling in Loom for AWS

High 7.6

In plain English

A high-severity server-side request forgery in loom from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Server-side request forgery in the tool server and remote agent connection handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the credentials of the application's own container role and to read responses from arbitrary internal network locations, via a crafted connection address supplied when registering, updating or testing a tool server or remote agent. To remediate this issue, users should upgrade to version 1.7.0 or later.

Affected products (as reported)

Vendor	Product	Versions
AWS	loom	0 – before 1.7.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

References

https://github.com/awslabs/loom/releases/tag/v1.7.0 release-notes, patch
https://aws.amazon.com/security/security-bulletins/2026-124-aws/ vendor-advisory
https://github.com/awslabs/loom/security/advisories/GHSA-w6g6-h8pv-6mc7 third-party-advisory