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CVE-2020-15084 Details

Description

In express-jwt (NPM package) up and including version 5.3.3, the algorithms entry to be specified in the configuration is not being enforced. When algorithms is not specified in the configuration, with the combination of jwks-rsa, it may lead to authorization bypass. You are affected by this vulnerability if all of the following conditions apply: - You are using express-jwt - You do not have **algorithms** configured in your express-jwt configuration. - You are using libraries such as jwks-rsa as the **secret**. You can fix this by specifying **algorithms** in the express-jwt configuration. See linked GHSA for example. This is also fixed in version 6.0.0.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:7.7 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/auth0/express-jwt/commit/7ecab5f8f0cab5297c2b863596566eb0c019cdef	CVE	PatchThird Party Advisory
https://github.com/auth0/express-jwt/security/advisories/GHSA-6g6m-m6h5-w9gf	CVE	Third Party Advisory
https://github.com/auth0/express-jwt/commit/7ecab5f8f0cab5297c2b863596566eb0c019cdef	[email protected]	PatchThird Party Advisory
https://github.com/auth0/express-jwt/security/advisories/GHSA-6g6m-m6h5-w9gf	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]
CWE-285	Improper Authorization	[email protected]

Affected Products

Product	Versions
auth0 express-jwt	<= 5.3.3
CPE cpe:2.3:a:auth0:express-jwt::::::node.js::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 21, 2022	Reanalysis	[email protected]
Jul 8, 2020	Initial Analysis	[email protected]
Jun 30, 2020	CVE Modified	[email protected]