CVE-2026-75604
published 2026-09-01CVE-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
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| next | next | >= 13.4.0 < 15.5.24 | 15.5.24 |
| next | next | >= 16.0.0 < 16.3.3 | 16.3.3 |
| vercel | next.js | — | — |
| vercel | next.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
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Red Hat
next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
vendor_redhat·2026-09-01·CVSS 9.0
CVE-2026-75604 [CRITICAL] CWE-22 next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
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 affe
GHSA
Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
ghsa·2026-09-08
CVE-2026-75604 [CRITICAL] CWE-22 Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
## Impact
A vulnerability in applications using Pages and App router without Cache Component can lead to remote code execution when the server is hosted on machines using a Windows filesystem.
## Workaround
There is no known workaround for affected windows-hosted applications. You should upgrade immediately if your server is hosted on Windows.
No detection rules found.
Rapid7
Metasploit Wrap Up: This One Goes to Sixteen!
blogs_rapid7·2026-09-11·CVSS 8.4
CVE-2025-66516 [HIGH] Metasploit Wrap Up: This One Goes to Sixteen!
## This One Goes to Sixteen!
Another banger from Metasploit with sixteen new modules, including ten exploit modules, with five on the CISA KEV list. Cisco, Papercut, Sonicwall, Jetbrains, and Langflow all have exploit modules, and not to be outdone, we even have a Metasploit scanner to watch the watchers!
## New module content (16)
## Elasticsearch ingest-attachment Apache Tika XFA XXE Local File Read
Authors: Bourbon Offensive Security Services and Jean-Marie Bourbon
Type: Auxiliary
Pull request: #21739 contributed by kmkz
Path: scanner/http/elasticsearch_tika_xfa_xxe
CVE reference: CVE-2025-66516
Description: Adds an auxiliary scanner module for CVE-2025-54988/CVE-2025-66516. The module validates an XML External Entity (XXE) vulnerability in Apache Tika's XFA parser exposed thro
Hackernews
⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and More
blogs_hackernews·2026-08-31
CVE-2026-81578 ⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and More
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## ⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and More
The boring parts caused most of the trouble.
A router shipped ready to listen. A fake check turned the user into the installer. Trusted systems collected traffic and passwords, then cleaned the logs. Old bugs formed new attack chains. Even an AI agent decided its assigned task was optional.
Elsewhere, fake apps, helpful support calls, cheap banking kits, exposed systems, and weak defaults kept things moving. Different attacks, same useful mistake: something familiar was trusted without a second look.
Here is the week...
## ⚡ Threat of the
Checkpoint
31th August – Threat Intelligence Report
blogs_checkpoint·2026-08-31
CVE-2026-81578 31th August – Threat Intelligence Report
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Hackernews
Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE
blogs_hackernews·2026-08-27
CVE-2026-75604 Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE
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## Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE
Credit: Hacktron
Vercel has released security patches for two critical-severity vulnerabilities in the Next.js web framework, both of which allow unauthenticated remote code execution, one exploitable via specially crafted AVIF image files and the other through a path traversal flaw affecting servers that use a Windows filesystem.
The Windows path traversal, tracked as CVE-2026-75604 (CVSS score: 9.0), affects Next.js applications that use both the Pages Router and App Router without Cache Components when the server uses a Windows filesystem.
Linu
Bugzilla
CVE-2026-75604 next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
bugzilla·2026-09-01·CVSS 9.0
CVE-2026-75604 [CRITICAL] CVE-2026-75604 next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
CVE-2026-75604 next: Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
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 execut
https://github.com/vercel/next.js/commit/968b9fcb26bdeb8e0a861a9df05361474666d51bhttps://github.com/vercel/next.js/commit/b0f3460a92b955d3ca41fccff9a525a2b910fbf3https://github.com/vercel/next.js/releases/tag/v15.5.24https://github.com/vercel/next.js/releases/tag/v16.3.3https://github.com/vercel/next.js/security/advisories/GHSA-p293-qw3h-jr36
2026-09-01
Published