Vulnerability Report

CVE-2025-49005

Title: Vercel Next.Js

Other

Proof Of Concept

No public PoC currently indexed for CVE-2025-49005.

CWE Category CWE-444
Published Date Jul 03, 2025
Modified Date Sep 10, 2025
Exploit Status Not Found
Score 3.7 CVSS v3.1
Exploit Probability (EPSS)
0.43%

Vulnerability Summary

CVE-2025-49005: Next.js is a React framework for building full-stack web applications. In Next.js App Router from 15.3.0 to before 15.3.3 and Vercel CLI from 41.4.1 to 42.2.0, a cache poisoning vulnerability was found. The issue allowed page requests for HTML content to return a React Server Component (RSC) payload instead under certain conditions. When deployed to Vercel, this would only impact the browser cache, and would not lead to the CDN being poisoned. When self-hosted and deployed externally, this could lead to cache poisoning if the CDN does not properly distinguish between RSC / HTML in the cache keys. This issue has been resolved in Next.js 15.3.3.

Impacted Vendors

Z
zeit 1
V
vercel 2
K
kanopi 1

Reference Links

https://github.com/vercel/next.js/commit/ec202eccf05820b60c6126d6411fe16766ecc066 https://github.com/vercel/next.js/issues/79346 https://github.com/vercel/next.js/releases/tag/v15.3.3 https://github.com/vercel/next.js/security/advisories/GHSA-r2fc-ccr8-96c4 https://vercel.com/changelog/cve-2025-49005 https://github.com/vercel/next.js/issues/79346
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.7
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-49005 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

MODIFIED

Vulnerability data updated via NVD.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Stack

No specific products linked.