CVE-2026-94484
Description
A flaw was found in Next.js. Applications configured with root-level catch-all pages and static routes share a response cache key that does not properly distinguish between different routes. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request to poison the shared application cache. Successful exploitation can result in a persistent Denial of Service (DoS) or cause unauthorized content substitution across different users until the cache entry is refreshed.
Statement
This vulnerability is rated as having a Moderate impact for Red Hat products because, although exploitation can be triggered remotely without authentication, it requires a specific application routing architecture combining root catch-all handlers with statically generated pages. While successful cache poisoning can disrupt service availability or serve incorrect responses to subsequent clients, it does not allow remote code execution or direct data compromise. Red Hat environments utilizing Next.js are only susceptible if the deployed web frontend actively implements Incremental Static Regeneration alongside root catch-all route definitions.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | 4.8 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | High | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | Low | Low | N/A |
| Availability Impact | Low | Low | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
NVD: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
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