What is CVE-2020-4037?

CVE-2020-4037 is a medium-severity vulnerability in Oauth2 Proxy, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2020-06-29.

How severe is CVE-2020-4037?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Open Redirect in Oauth2 Proxy

CVE-2020-4037

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 us…

Vulnerability class: Open Redirect

EPSS: 0.009 (55.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Oauth2 Proxy — versions >= 5.1.1, < 6.0.0
Oauth2_proxy_project Oauth2_proxy

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-4037?: CVE-2020-4037 is a medium-severity vulnerability in Oauth2 Proxy, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2020-06-29.
How severe is CVE-2020-4037?: Medium severity. CVSS v3 base score is 4.3 out of 10.