CVE-2021-32631

JSON Web Tokens not properly verified

MEDIUM
6.5
CVSS Score
Published: July 26, 2021 at 03:20 PM UTC
Updated: June 17, 2026 at 03:53 AM UTC
2 products affected across 2 vendorsCommonProject Common

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

Common is a package of common modules that can be accessed by NIMBLE services. Common before commit number 3b96cb0293d3443b870351945f41d7d55cb34b53 did not properly verify the signature of JSON Web Tokens. This allows someone to forge a valid JWT. Being able to forge JWTs may lead to authentication bypasses. Commit number 3b96cb0293d3443b870351945f41d7d55cb34b53 contains a patch for the issue. As a workaround, one may use the parseClaimsJws method to correctly verify the signature of a JWT.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3b96cb0293d3443b870351945f41d7d55cb34b53

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-290

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