CVE-2026-103958 Server-side request forgery in the tool server and remote agent connection handling in Loom for AWS
An authenticated attacker can exploit SSRF in AWS Loom to steal container role credentials and read internal network responses.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103958?
CVE-2026-103958 is a high-severity server-side request forgery vulnerability in AWS loom, published on 2 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-103958?
How do I fix CVE-2026-103958?
No fix has been published for CVE-2026-103958 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-103958 being exploited?
There is no known exploitation of CVE-2026-103958 in the wild and no public exploit code.
Sources
Also known as GHSA-w6g6-h8pv-6mc7.