Vercel Next.js up to 16.3.7 Cache information disclosure

Summaryinfo

A vulnerability was found in Vercel Next.js up to 16.3.7. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Cache Handler. The manipulation results in information disclosure. This vulnerability was named CVE-2026-103004. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Vercel Next.js up to 16.3.7. Affected is some unknown processing of the component Cache Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Next.js versions from 16.3.0 to 16.3.7 warm `use cache` handlers using `next/root-params` and can leak their return value to pages with different root params. With Cache Components enabled (cacheComponents: true), a 'use cache' function that calls another 'use cache' function that reads a root param can be keyed incorrectly when the inner call is served from an existing entry: the enclosing function's cache key then omits that root param. The enclosing entry is written once and reused for all root param values, so a response for one root param value can serve content produced for a different value — whether the page is prerendered at build time or at runtime, or rendered dynamically. Shared cache headers let downstream caches redistribute the content further. What values are leaked cannot be attacker controlled. Which value's content is served depends only on which invocation wrote the entry first. This has been patched in 16.3.8.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-103004 since 09/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 16.3.8 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• JavaScript Library

Vendor

• Vercel

Name

• Next.js

Version

• 16.3.0
• 16.3.1
• 16.3.2
• 16.3.3
• 16.3.4
• 16.3.5
• 16.3.6
• 16.3.7

Website

• Product: https://github.com/vercel/next.js/

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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