CVE-2026-45109

Published: May 13, 2026

Modified: May 13, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.

Vendor	Product	Versions
vercel	next.js	affected `>= 15.2.0, < 15.5.17` affected `>= 16.0.0, < 16.2.6`

Weaknesses (CWE)

CWE-288

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6

x_refsource_CONFIRM

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now

CVE-2026-45109

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References