CVE-2026-18140
CVE-2026-18140: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-18140] Denial of Service via uncontrolled recursion with deeply nested JSON
CVE-2026-18140Source published Source updated
Uncontrolled recursion in the unknown-key skip path of the aws-smithy-json runtime crate before 0.62.7, which the smithy-rs code generator invokes from every generated struct deserializer, might allow remote unauthenticated users to cause a denial of service (process abort via stack exhaustion) via a single small HTTP request containing deeply nested JSON to a smithy-rs generated server. To remediate this issue, users should upgrade to aws-smithy-json 0.62.7 or later and rebuild. This can make the affected server unavailable to legitimate users. Red Hat products utilizing `smithy-rs` generated servers, such as components in Red Hat Enterprise Linux and Red Hat Trusted Artifact Signer, are susceptible to service disruption if exposed to untrusted networks. Red Hat severity: Important —…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Logging Subsystem for Red Hat OpenShift 6.6
- Red Hat Trusted Artifact Signer
2 more entries in the full advisory.
- Source-reported affected versions
- < 0.62.7
- Source-reported fixed versions
- 0.62.7
- goose-0:1.38.0-1.el10_2
- goose-0:1.38.0-1.el9_8
- openshift-logging/vector-rhel9:1788439747
3 more entries in the full advisory.
- Mitigation guidance
- Restrict network access to services that process JSON input using the `aws-smithy-json` runtime. Configure firewalls to limit incoming connections to trusted sources, thereby reducing the exposure to remote unauthenticated denial of service attacks. If the service is reloaded or restarted, ensure firewall rules persist.
Android app · Google Play
Monitor future Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.