What is CVE-2021-39191?

CVE-2021-39191 is a medium-severity vulnerability in Zmartzone Mod_auth_openidc, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2021-09-03.

How severe is CVE-2021-39191?

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

Open Redirect in Zmartzone Mod_auth_openidc

CVE-2021-39191

mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In versions prior to 2.4.9.4, the 3rd-par…

Vulnerability class: Open Redirect

EPSS: 0.003 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Zmartzone Mod_auth_openidc — versions <=2.4.9.3

Weakness classification (CWE)

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

References

Frequently asked questions

What is CVE-2021-39191?: CVE-2021-39191 is a medium-severity vulnerability in Zmartzone Mod_auth_openidc, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2021-09-03.
How severe is CVE-2021-39191?: Medium severity. CVSS v3 base score is 4.7 out of 10.