CVE-2026-94482Next.js: Denial of Service in App Router using Server Actions

8.2HighCVSS base score
0.39%Exploitation in 30 daysEPSS · top 67% of all CVEs
NoKnown exploitednot in CISA's KEV catalog
NonePublic exploitsnone known yet

Description

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.

Timeline

2026
21 Sept 2026
21 Sept 2026
ID reserved
By GitHub_M
22 Oct 202631 days later
22 Oct 2026· 31 days later
Published
30 Oct 20268 days later
30 Oct 2026· 8 days later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-94482, by who scored it
Scored by	CVSS	Score	Vector
GitHub_MCNA (assigner)	4.0	High8.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
NVDNVD · Awaiting Analysis	4.0	High8.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.39% · top 67% of all CVEs (15 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.

Affected products

vercel · next.js
- affected >= 13.0.0, < 15.5.28
- affected >= 16.0.0, < 16.4.1

Affected packages

From reviewed advisories of the GitHub Advisory Database.

npmnextGHSA-p3m5-59mp-jv5r (opens in a new tab)

References3

https://github.com/vercel/next.js/security/advisories/GHSA-p3m5-59mp-jv5r (opens in a new tab)x_refsource_CONFIRM
https://github.com/vercel/next.js/releases/tag/v15.5.28 (opens in a new tab)x_refsource_MISC
https://github.com/vercel/next.js/releases/tag/v16.4.1 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-94482](https://cveledger.app/badge/CVE-2026-94482.svg)](https://cveledger.app/cve/CVE-2026-94482)

Record last updated 30 Oct 2026, 18:09 UTC.