Vulnerability in Auth0 Express-Openid-Connect

CVE-2021-41246

Express OpenID Connect is express JS middleware implementing sign on for Express web apps using OpenID Connect. Versions before and including `2.5.1` do not regenerate the session id and session cookie when user logs in. This behavior opens up the application to various session fixation vulnerabilities. Versions `2.5.2` contains a patch for this issue.

EPSS: 0.009 (55.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-41246?
CVE-2021-41246 is a medium-severity vulnerability in Auth0 Express-Openid-Connect, classified under Session Fixation. CVSS score: 4.6/10. Published 2021-12-09.
How severe is CVE-2021-41246?
Medium severity. CVSS v3 base score is 4.6 out of 10.