CVE-2025-49005 – next

Package

Manager: npm
Name: next
Vulnerable Version: >=15.3.0 <15.3.3

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00046 pctl0.13523

Details

Next.js has a Cache poisoning vulnerability due to omission of the Vary header ### Summary A cache poisoning issue in **Next.js App Router >=15.3.0 and < 15.3.3** may have allowed RSC payloads to be cached and served in place of HTML, under specific conditions involving middleware and redirects. This issue has been fixed in **Next.js 15.3.3**. Users on affected versions should **upgrade immediately** and **redeploy** to ensure proper caching behavior. More details: [CVE-2025-49005](https://vercel.com/changelog/cve-2025-49005)

Metadata

Created: 2025-07-03T20:30:18Z
Modified: 2025-07-03T21:49:00Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-r2fc-ccr8-96c4/GHSA-r2fc-ccr8-96c4.json
CWE IDs: ["CWE-444"]
Alternative ID: GHSA-r2fc-ccr8-96c4
Finding: F110
Auto approve: 1