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TI-2026-79302 Aliases CVE-2026-94482GHSA-p3m5-59mp-jv5r

Denial of service in Next.js App Router using Server Actions

Priority MEDIUM 42CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.

Summary

Next.js from 13.0.0 before 15.5.28 and from 16.0.0 before 16.4.1 is affected. Missing resource limits (CWE-770) let crafted requests consume excessive CPU in App Router applications that use at least one Server Action. An unauthenticated remote attacker can block processing of further requests in the same process. Pages Router applications and App Router applications without Server Actions are not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

Next.js is a React framework for building full-stack web applications. From 13.0.0 until 15.5.28 and 16.4.1, crafted requests targeting App Router applications with at least one Server Action can cause excessive CPU consumption and block processing of further requests in the same process. Applications using the Pages Router and App Router applications without Server Actions are not affected. This issue is fixed in versions 15.5.28 and 16.4.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00386 32nd percentileScored 2026-11-07
Fix Partial next.js (vercel): 15.5.28, 16.4.1next (npm): 15.5.28, 16.4.1Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vercelnext.js13.0.0 to before 15.5.28; 16.0.0 to before 16.4.115.5.28, 16.4.1Patch availableCNA
—next (npm)13.0.0 to before 15.5.2815.5.28Patch availableGHSA-p3m5-59mp-jv5r
—next (npm)16.0.0 to before 16.4.116.4.1Patch availableGHSA-p3m5-59mp-jv5r
  • next.js Vendorvercel Affected 13.0.0 to before 15.5.28; 16.0.0 to before 16.4.1 Fixed in 15.5.28, 16.4.1 Patch available CNA
  • next (npm) Vendor— Affected 13.0.0 to before 15.5.28 Fixed in 15.5.28 Patch available GHSA-p3m5-59mp-jv5r
  • next (npm) Vendor— Affected 16.0.0 to before 16.4.1 Fixed in 16.4.1 Patch available GHSA-p3m5-59mp-jv5r

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:vercel:next.js:*:*:*:*:*:*:*:*——vercel
  • cpe:2.3:a:vercel:next.js:*:*:*:*:*:*:*:* Versions — — ·vercel

Remediation

Upgrade Next.js 15 applications to 15.5.28 and Next.js 16 applications to 16.4.1. Red Hat lists Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat Trusted Artifact Signer and streams for Apache Kafka 3 as affected with no plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA next.js (vercel) Fixed in 15.5.28, 16.4.1
  • Fix · GHSA-p3m5-59mp-jv5r next (npm) Fixed in 15.5.28 Advisory →
  • Fix · GHSA-p3m5-59mp-jv5r next (npm) Fixed in 16.4.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat Trusted Artifact SignerAffectedNo fix yet
streams for Apache Kafka 3AffectedNo fix yet
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-94482
  2. 2026-10-22 Alias added: GHSA-p3m5-59mp-jv5r
  3. 2026-10-22 Fix available: npm/[email protected], npm/[email protected] · GHSA-p3m5-59mp-jv5r
  4. 2026-10-22 CVSS score added · GHSA-p3m5-59mp-jv5r
  5. 2026-10-22 Weakness changed · GHSA-p3m5-59mp-jv5r
  6. 2026-10-22 4 new references · GHSA-p3m5-59mp-jv5r
  7. 2026-10-23 Affected versions changed · Red Hat
  8. 2026-10-23 CVSS score added · Red Hat
  9. 2026-10-23 Priority changed: MEDIUM → LOW
  10. 2026-10-29 Affected versions changed · Red Hat
  11. 2026-10-30 CISA SSVC decision points changed
  12. 2026-10-30 Priority changed: LOW → MEDIUM

References

Other 4

  • TI-2025-34861 Deserialization of untrusted data in Meta react-server-dom-webpack KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-21309 Authorization Bypass in Next.js Middleware CVSS 3.1CRITICAL 9.1
  • TI-2024-15745 An issue in Hyper on macOS version 3.4.1 and before, allows remote attackers to execute… CVSS 3.1CRITICAL 9.8
  • TI-2025-34863 Deserialization of untrusted data in Meta react-server-dom-webpack CVSS 3.1HIGH 7.5
  • TI-2024-31371 Cache Poisoning in next.js CVSS 3.1HIGH 7.5
  • TI-2023-24914 Next.js before 13.4.20-canary.13 lacks a cache-control header and thus empty prefetch… CVSS 3.1HIGH 7.5
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences