Vulnerability Description
Express.js minimalist web framework for node. Versions of Express.js prior to 4.19.0 and all pre-release alpha and beta versions of 5.0 are affected by an open redirect vulnerability using malformed URLs. When a user of Express performs a redirect using a user-provided URL Express performs an encode [using `encodeurl`](https://github.com/pillarjs/encodeurl) on the contents before passing it to the `location` header. This can cause malformed URLs to be evaluated in unexpected ways by common redirect allow list implementations in Express applications, leading to an Open Redirect via bypass of a properly implemented allow list. The main method impacted is `res.location()` but this is also called from within `res.redirect()`. The vulnerability is fixed in 4.19.2 and 5.0.0-beta.3.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openjsf | Express | < 4.19.2 |
Related Weaknesses (CWE)
References
- https://expressjs.com/en/4x/api.html#res.locationTechnical Description
- https://github.com/expressjs/express/commit/0867302ddbde0e9463d0564fea5861feb708Patch
- https://github.com/expressjs/express/commit/0b746953c4bd8e377123527db11f9cd866e3Patch
- https://github.com/expressjs/express/pull/5539Issue Tracking
- https://github.com/expressjs/express/security/advisories/GHSA-rv95-896h-c2vcPatchVendor Advisory
- https://github.com/koajs/koa/issues/1800Issue Tracking
- https://expressjs.com/en/4x/api.html#res.locationTechnical Description
- https://github.com/expressjs/express/commit/0867302ddbde0e9463d0564fea5861feb708Patch
- https://github.com/expressjs/express/commit/0b746953c4bd8e377123527db11f9cd866e3Patch
- https://github.com/expressjs/express/pull/5539Issue Tracking
- https://github.com/expressjs/express/security/advisories/GHSA-rv95-896h-c2vcPatchVendor Advisory
- https://github.com/koajs/koa/issues/1800Issue Tracking
FAQ
What is CVE-2024-29041?
CVE-2024-29041 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Express.js minimalist web framework for node. Versions of Express.js prior to 4.19.0 and all pre-release alpha and beta versions of 5.0 are affected by an open redirect vulnerability using malformed U...
How severe is CVE-2024-29041?
CVE-2024-29041 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-29041?
Check the references section above for vendor advisories and patch information. Affected products include: Openjsf Express.