CVE-2026-103956: critical vulnerability in AWS loom
Missing authentication for critical function in Loom for AWS
Published
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 10epss 0.5%
from disclosure to weapon1 days
Published on NVDOct 2
1st PoC+1d
exploitation probability
0.5%top 61% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Missing authentication for critical function in the authentication dependency in Loom for AWS before 1.6.1 allowed remote actors to obtain super-admin authority over the agent control plane, including registering tool servers, reading stored integration credentials, and rewriting the IAM role policies attached to managed agent roles, via any request to the application API in a deployment where no identity provider is configured.
To remediate this issue, users should upgrade to version 1.6.1 or later.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
AWS · loompublic PoCs found — 1
githubgithub.com/abraxas/cve-2026-103956-loom-unauth★ 8⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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