Is CVE-2026-44576 actively exploited?

No active exploitation of CVE-2026-44576 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44576 be exploited remotely?

Yes. CVE-2026-44576 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44576?

CVE-2026-44576 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-44576

CWE-436Published: May 13, 2026· Updated: May 14, 2026

5.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.7th

Official Description

Next.js is a React framework for building full-stack web applications. From 14.2.0 to before 15.5.16 and 16.2.5, applications using React Server Components can be vulnerable to cache poisoning when shared caches do not correctly partition response variants. Under affected conditions, an attacker can cause an RSC response to be served from the original URL and poison shared cache entries so later visitors receive component payloads instead of the expected HTML. This vulnerability is fixed in 15.5.16 and 16.2.5.

NVD Source

Technical Analysis

CVE-2026-44576 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.