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CVE-2026-44579

7.5 · HIGH

Next.js is a React framework for building full-stack web applications.

Published May 13, 2026CWE-770EPSS 0.76%

Overview

CVE-2026-44579 is a high-severity vulnerability. It was published on May 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/vercel/next.js/security/advisories/GHSA-mg66-mrh9-m8jxRefaccess.redhat.com/errata/RHSA-2026:34608Refaccess.redhat.com/errata/RHSA-2026:37272Refaccess.redhat.com/errata/RHSA-2026:40974Refaccess.redhat.com/errata/RHSA-2026:54435Refaccess.redhat.com/security/cve/CVE-2026-44579Refbugzilla.redhat.com/show_bug.cgi?id=2477193Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44579.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-44579?

CVE-2026-44579 is a high-severity vulnerability. It was published on May 13, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-44579?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-44579?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-44579?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-44579 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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