CVE-2020-26160
Authorization bypass in github.com/dgrijalva/jwt-go
7.5
HIGH
CVSS 3.1
EPSS 0.07%
Description
jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.
How to fix CVE-2020-26160
To remediate CVE-2020-26160, upgrade the affected package to a fixed version below.
- —upgrade to 3.2.0-3 or later
- —no fix listed
- —no fix listed
- —upgrade to 4.0.0-preview1 or later
- —upgrade to 4.0.0-preview1 or later
Is CVE-2020-26160 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 3.2.0-3
- >= 0.0.0-20150717181359-44718f8a89b0, <= 3.2.0
- >= 0.0.0-20150717181359-44718f8a89b0
- from 0, < 4.0.0-preview1
- from 0, < 4.0.0-preview1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |