7.5 High

CVE-2026-44575 Next.js is a React framework for building full-stack web applications

Description

Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.16 and 16.2.5, App Router applications that rely on middleware or proxy-based checks for authorization can allow unauthorized access through transport-specific route variants used for segment prefetching. In affected configurations, specially crafted .rsc and segment-prefetch URLs can resolve to the same page without being matched by the intended middleware rule, which can allow protected content to be reached without the expected authorization check. This vulnerability is fixed in 15.5.16 and 16.2.5.

Affected products and versions

Product	Affected versions	Fixed in
next.js 16.0	16.0.0 → < 16.2.5	16.2.5
next.js 15.2	15.2.0 → < 15.5.16	15.5.16
Red Hat Enterprise Linux AI (RHEL AI) 3	Versions not published
Red Hat Trusted Artifact Signer	Versions not published
streams for Apache Kafka 2	Versions not published
streams for Apache Kafka 3	Versions not published
Red Hat Enterprise Linux 10	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 8	Versions not published

Show the 4 other branches

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 9	Versions not published
Streams for Apache Kafka 2.9.4	Versions not published
Red Hat Trusted Artifact Signer 1.4 1783327185	earliest → < 1783327185	1783327185
Red Hat Trusted Artifact Signer 1.3 1783958622	earliest → < 1783958622	1783958622