CVE-2026-44579

Next.js is a React framework for building full-stack web applications. From to before 15.5.16 and 16.2.5, applications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service. This vulnerability is fixed in 15.5.16 and 16.2.5.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vercel/next.js/security/advisories/GHSA-mg66-mrh9-m8jx	Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34608
https://access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:40974
https://access.redhat.com/errata/RHSA-2026:54435
https://access.redhat.com/security/cve/CVE-2026-44579
https://bugzilla.redhat.com/show_bug.cgi?id=2477193
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44579.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vercel:next.js::::::node.js::*
	cpe:2.3:a:vercel:next.js::::::node.js::*

History

No history.

Information

Published : 2026-05-13 18:16

Updated : 2026-08-13 13:19

NVD link : CVE-2026-44579

Mitre link : CVE-2026-44579

CVE.ORG link : CVE-2026-44579

JSON object : View

Products Affected

vercel

next.js

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-833

Deadlock

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