The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a     sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.
    (CVE-2023-51774)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a
    sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.
    (CVE-2023-51774)

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2025:0004-1 advisory.

    - New upstream release 1.16.6, see bundled CHANGELOG.md

    - Remove padding oracle by @btoews in https://github.com/nov/json-jwt/pull/109
    - Fixes CVE-2023-51774 boo#1220727

    - updated to version 1.11.0
      - no changelog found
      - Fixes CVE-2019-18848 boo#1156649

Tenable has extracted the preceding description block directly from the SUSE security advisory.

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

ID	Name	Product	Family	Type	Severity
260938	Linux Distros Unpatched Vulnerability : CVE-2023-51774	Nessus	Misc.	Local	high
413782	SCA: security update for json-jwt (GHSA-c8v6-786g-vjx6)	Tenable Cloud Security	SCA Checks	Local	high
413782	SCA: security update for json-jwt (GHSA-c8v6-786g-vjx6)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
213542	openSUSE 15 Security Update : rubygem-json-jwt (openSUSE-SU-2025:0004-1)	Nessus	SuSE Local Security Checks	Local	high

Detections

Analytics

CVE-2023-51774

high

Tenable Plugins

high

high

high

high