High severity7.5OSV Advisory· Published Jul 27, 2026· Updated Jul 29, 2026
CVE-2026-64641
CVE-2026-64641
Description
Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
nextnpm | >= 13.0.0, < 15.5.21 | 15.5.21 |
nextnpm | >= 16.0.0, < 16.2.11 | 16.2.11 |
Affected products
17- osv-coords14 versionspkg:apk/chainguard/homepagepkg:apk/chainguard/jitsucom-jitsu-consolepkg:apk/chainguard/keep-uipkg:apk/chainguard/keep-ui-fipspkg:apk/chainguard/langfuse-2pkg:apk/chainguard/langfuse-3pkg:apk/chainguard/langfuse-3-workerpkg:apk/chainguard/langfuse-fips-2pkg:apk/chainguard/langfuse-fips-3pkg:apk/chainguard/langfuse-fips-3-workerpkg:apk/chainguard/peerdb-uipkg:apk/wolfi/jitsucom-jitsu-consolepkg:apk/wolfi/langfuse-3pkg:apk/wolfi/langfuse-3-worker
< 1.13.2-r9+ 13 more
- (no CPE)range: < 1.13.2-r9
- (no CPE)range: < 2.11.0-r30
- (no CPE)range: < 0.54.2-r1
- (no CPE)range: < 0.54.2-r1
- (no CPE)range: < 2.95.12-r35
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 2.95.12-r38
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 0.37.3-r1
- (no CPE)range: < 2.11.0-r30
- (no CPE)range: < 3.224.1-r0
- (no CPE)range: < 3.224.1-r0
Patches
Vulnerability mechanics
References
6- github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12nvdPatchWEB
- github.com/vercel/next.js/pull/96013nvdIssue TrackingPatchWEB
- github.com/advisories/GHSA-m99w-x7hq-7vfjghsaADVISORY
- github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfjnvdVendor AdvisoryWEB
- github.com/vercel/next.js/releases/tag/v15.5.21nvdProductRelease NotesWEB
- github.com/vercel/next.js/releases/tag/v16.2.11nvdProductRelease NotesWEB
News mentions
3- ⚡ Weekly Recap: Rogue AI Models, $88M Bitcoin Theft, Water-System Attacks and Dangling DNS HijacksThe Hacker News · Aug 3, 2026
- Next.js: Nine SSRF, Auth Bypass, and DoS Vulnerabilities Patched TogetherVypr Intelligence · Jul 27, 2026
- Next.js Patches Nine Security Flaws Enabling SSRF, Authentication Bypass, and DoS AttacksCyber Security News · Jul 23, 2026