aws-smithy-json: Uncontrolled recursion in the aws-smithy-json unknown-key skip path allows unauthenticated remote de...
High-risk advisory
CVE-2026-18140
Summary
aws-smithy-json: Uncontrolled recursion in the aws-smithy-json unknown-key skip path allows unauthenticated remote denial of service in smithy-rs generated servers
Why it matters
GitHub has published a reviewed security advisory for aws-smithy-json. Prioritize it with other application dependency updates, especially because EPSS places it in the 35% percentile.
Operator check
Check whether aws-smithy-json is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.7. EPSS probability: 0.4%; percentile: 35%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.