High severity · published Oct 22, 2026
CVE-2026-94482
Next.js: Denial of Service in App Router using Server Actions
New
8.2
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
next.js · vercel
>= 13.0.0, < 15.5.28; >= 16.0.0, < 16.4.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94482
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-94482
github.com
https://github.com/vercel/next.js/releases/tag/v15.5.28
github.com
https://github.com/vercel/next.js/releases/tag/v16.4.1
github.com
https://github.com/vercel/next.js/security/advisories/GHSA-p3m5-59mp-jv5r
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