Vulnerability · Published Dec 9, 2021 · Assigned by GitHub_M

CVE-2021-41246Session fixation in express-openid-connect

Medium 4.6

In plain English

A medium-severity session fixation in express-openid-connect from auth0. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.9%top 39.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	express-openid-connect	2.5.2	GHSA-7rg2-qxmf-hhx9

Affected products (as reported)

Vendor	Product	Versions
auth0	express-openid-connect	>= 2.3.0, < 2.5.2

Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

References

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