GHSA-r2fc-ccr8-96c4
Next.js has a Cache poisoning vulnerability due to omission of the Vary header
At a glance
- Published
- Updated
- CVE
- CVE-2025-49005
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Description
### 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)
Affected packages
| Package | Versions |
|---|---|
| npm · next | introduced 15.3.0, fixed 15.3.3 |
References
- https://github.com/vercel/next.js/security/advisories/GHSA-r2fc-ccr8-96c4 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-49005 ADVISORY
- https://github.com/vercel/next.js/issues/79346 WEB
- https://github.com/vercel/next.js/pull/79939 WEB
- https://github.com/vercel/next.js/commit/ec202eccf05820b60c6126d6411fe16766ecc066 WEB
- https://github.com/vercel/next.js PACKAGE
- https://github.com/vercel/next.js/releases/tag/v15.3.3 WEB
- https://vercel.com/changelog/cve-2025-49005 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |