All vulnerabilities
CVE-2026-103957GHSA-jcxf-gpf4-58hm

Server-side request forgery in the OAuth2 discovery handling in Loom for AWS

AWS loomContainers & cloud
Open in ThreatlineRecord JSON
CVSS
6.2Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.38%Chance of exploitation activity in the next 30 days, higher than 30% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.7.0Fixed versionCVE List
Published2 Oct 2026Updated 9 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Server-side request forgery in the OAuth2 discovery handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the access token of another user of the deployment and to cause the application to issue requests to arbitrary internal network locations, via a crafted discovery document address supplied when registering a tool server or remote agent configured for delegated authentication.

To remediate this issue, users should upgrade to version 1.7.0 or later.

Text from GitHub Advisory Database

Affected versions 2

  • loomaffected: all versions before 1.7.0CVE List
  • loom<1.7.0GitHub

References 3