CVE-2020-15084
HIGHexpress-jwt < 5.3.3 - Authorization Bypass via Unenforced Algorithms Configuration
Title source: llmDescription
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.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/auth0/express-jwt/security/advisories/GHSA-6g6m-m6h5-w9gf
Patch, Third Party Advisory x_refsource_misc
https://github.com/auth0/express-jwt/commit/7ecab5f8f0cab5297c2b863596566eb0c019cdef
Scores
CVSS v3
7.7
EPSS
0.0106
EPSS Percentile
60.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Details
CWE
CWE-285
CWE-863
Status
published
Products (2)
auth0/express-jwt
< 5.3.3
npm/express-jwt
0 - 6.0.0npm
Published
Jun 30, 2020
Tracked Since
Feb 18, 2026