cbcvebase.
CVE-2026-75604
published 2026-09-01

CVE-2026-75604: Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App…

PriorityP271critical9CVSS 3.1
AVNACHPRNUINSCCHIHAH
EXPLOIT
EPSS
2.10%
81.6th percentile
Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.

Affected

4 ranges
VendorProductVersion rangeFixed in
nextnext>= 13.4.0 < 15.5.2415.5.24
nextnext>= 16.0.0 < 16.3.316.3.3
vercelnext.js——
vercelnext.js——

CVSS provenance

nvdv3.19.0CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
vendor_redhat9.0CRITICAL
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.