CVE-2020-4037
Open Redirect in OAuth2 Proxy
4.3
MEDIUM
CVSS 3.1
EPSS 0.38%
Description
In OAuth2 Proxy from version 5.1.1 and less than version 6.0.0, users can provide a redirect address for the proxy to send the authenticated user to at the end of the authentication flow. This is expected to be the original URL that the user was trying to access. This redirect URL is checked within the proxy and validated before redirecting the user to prevent malicious actors providing redirects to potentially harmful sites. This has been fixed in version 6.0.0.
How to fix CVE-2020-4037
To remediate CVE-2020-4037, upgrade the affected package to a fixed version below.
- —upgrade to 6.0.0 or later
- —upgrade to 6.0.0 or later
Is CVE-2020-4037 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 5.1.1, < 6.0.0
- >= 5.1.1, < 6.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |