CVE-2026-103957: high-severity vulnerability in AWS loom
Server-side request forgery in the OAuth2 discovery handling in Loom for AWS
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.4%
exploitation probability
0.4%top 70% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Affected products
AWS · loomRelated CVEs — AWS loom
In the same product, most dangerous first.