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Security Database

CVE

CWE

Training

CVE-2025-49826

Published: Jul 3, 2025

Modified: Jul 8, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

Next.js is a React framework for building full-stack web applications. From versions 15.0.4-canary.51 to before 15.1.8, a cache poisoning bug leading to a Denial of Service (DoS) condition was found in Next.js. This issue does not impact customers hosted on Vercel. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page. This issue has been addressed in version 15.1.8.

Vendor	Product	Versions
vercel	next.js	affected `>= 15.0.4-canary.51, < 15.1.8`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r

x_refsource_CONFIRM

https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93

x_refsource_MISC

https://github.com/vercel/next.js/releases/tag/v15.1.8

x_refsource_MISC

https://vercel.com/changelog/cve-2025-49826

x_refsource_MISC

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