Vulnerability CVE-2021-41246
Published: 2021-12-09

Description:
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.

Type:

CWE-384

 (Session Fixation)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Auth0 -> Express openid connect 

 References:
https://github.com/auth0/express-openid-connect/security/advisories/GHSA-7rg2-qxmf-hhx9
https://github.com/auth0/express-openid-connect/releases/tag/v2.5.2
https://github.com/auth0/express-openid-connect/commit/5ab67ff2bd84f76674066b5e129b43ab5f2f430f
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