CVE-2024-29041

Publication date 25 March 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
node-express	26.04 LTS resolute	Not affected
	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 4.17.3+~4.17.13-1ubuntu0.1~esm1
	20.04 LTS focal	Fixed 4.17.1-2ubuntu0.1~esm1
	18.04 LTS bionic	Fixed 4.1.1~dfsg-1ubuntu0.18.04.1~esm1
	16.04 LTS xenial	Fixed 4.1.1~dfsg-1ubuntu0.16.04.1~esm1

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Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-7581-1
Express vulnerabilities
19 June 2025