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.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:67593 advisory.

    For details on how to apply this update, which includes the changes described in this advisory, refer to:

    https://access.redhat.com/articles/11258

    Security Fix(es):

    * goose: aws-smithy-json: Denial of Service via uncontrolled recursion with deeply nested JSON     (CVE-2026-18140)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References     section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:67595 advisory.

    For details on how to apply this update, which includes the changes described in this advisory, refer to:

    https://access.redhat.com/articles/11258

    Security Fix(es):

    * goose: aws-smithy-json: Denial of Service via uncontrolled recursion with deeply nested JSON     (CVE-2026-18140)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References     section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
346043	RHEL 10 : goose update (Important) (RHSA-2026:67593)	Nessus	Red Hat Local Security Checks	Local	high
346037	RHEL 9 : goose update (Important) (RHSA-2026:67595)	Nessus	Red Hat Local Security Checks	Local	high

Detections

Analytics

CVE-2026-18140

high

Tenable Plugins

high

high