What is CVE-2021-21291?

CVE-2021-21291 is a medium-severity vulnerability in Oauth2-proxy, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2021-02-02.

How severe is CVE-2021-21291?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Open Redirect in Oauth2-proxy

CVE-2021-21291

OAuth2 Proxy is an open-source reverse proxy and static file server that provides authentication using Providers (Google, GitHub, and others) to validate accounts by email, domain or group. In OAuth2 Proxy before version 7.0.0, for users t…

Vulnerability class: Open Redirect

EPSS: 0.002 (47.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Oauth2-proxy — versions < 7.0.0

Weakness classification (CWE)

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

References

github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-4mf2-f3wh-gvf2 (x_refsource_CONFIRM)
github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.0.0 (x_refsource_MISC)
pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7 (x_refsource_MISC)
github.com/oauth2-proxy/oauth2-proxy/commit/780ae4f3c99b579cb2ea9845121caebb619… (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21291?: CVE-2021-21291 is a medium-severity vulnerability in Oauth2-proxy, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2021-02-02.
How severe is CVE-2021-21291?: Medium severity. CVSS v3 base score is 4.7 out of 10.