CVE-2024-10491: Resource Injection Vulnerability in Express

Overview of CVE-2024-10491

A new vulnerability, CVE-2024-10491, has been identified in legacy versions of Express, specifically within its response.links() function. This vulnerability enables attackers to preload unauthorized resources by injecting characters into the Link header. This injection vulnerability can lead to security risks when dynamic parameters are used in Express applications. Classified as medium severity, this issue presents potential security challenges for applications that depend on legacy versions of Express.

Affected Versions

• Impacted Versions: Express versions up to and including 3.21.4
• Resolution: Patched in Express NES v3.21.5 by HeroDevs

Since Express 3 is no longer actively supported by the community, organizations relying on these versions are left exposed without a commercial support solution.

Vulnerability Details

CVE-2024-10491 allows for unauthorized preloading of external resources by manipulating the Link header in HTTP responses. This issue occurs when unsanitized inputs are passed to the response.links() function, potentially allowing attackers to inject additional resources. The injected resources may lead to the loading of unauthorized or harmful content, posing security risks, especially for applications that incorporate dynamic parameters.

For additional technical details and insights, visit our Vulnerability Directory entry for CVE-2024-10491.

Mitigation

For organizations still operating on Express 3, mitigation options include:

• Migrating to a newer version of Express: Upgrading to supported versions offers improved security features and ongoing community support.
• Securing applications with HeroDevs’ Express NES: HeroDevs provides continuous security patches and support for deprecated versions of Express, ensuring that businesses can safely continue using their legacy applications.

Why Upgrade with HeroDevs?

With Express 3 officially end-of-life, HeroDevs’ Express NES is the only proactive security solution for these legacy versions. HeroDevs’ NES product line delivers regular security patches, like the fix introduced in Express NES v3.21.5, which addresses CVE-2024-10491 directly. Our solution ensures your applications remain secure and compliant, minimizing the risks associated with running unsupported software.