Home > Vulnerability Database > CVE-2023-51774

Mend.io Vulnerability Database

New vulnerability? Tell us about it!

CVE-2023-51774

Date: December 24, 2023

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.

Language: Ruby

Severity Score

8.4

Related Resources (9)

Url: https://github.com/nov/json-jwt

Url: https://github.com/nov/json-jwt/issues/120

Url: https://github.com/nov/json-jwt/issues/121

Url: https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md

Url: https://github.com/nov/json-jwt/commit/9c4d842a9465bd7960570ca326c3de79b4abc9d0

Url: https://nvd.nist.gov/vuln/detail/CVE-2023-51774

Url: https://github.com/nov/json-jwt/commit/593ea8bcaf2629048bad8c036191f2da0a2e713c

Url: https://github.com/rubysec/ruby-advisory-db/blob/master/gems/json-jwt/CVE-2023-51774.yml

Url: https://www.mend.io/vulnerability-database/CVE-2023-51774

Severity Score

8.4

Weakness Type (CWE)

Improper Access Control

CWE-284

CVSS v3.1

Base Score:	8.4
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

Do you need more information?

Contact Us