HighGHSA-5j59-xgg2-r9c4

Next has a Denial of Service with Server Components - Incomplete Fix Follow-Up

Published 12 Dec 2025 · Updated 10 Sept 2026

Affected packages

nextnpm
Affected
>=13.3.1-canary.0 <14.2.35
Fixed in
14.2.35
Update to the fixed version for your release line, for example:npm install next@14.2.35
nextnpm
Affected
>=15.0.6 <15.0.7
Fixed in
15.0.7
Update to the fixed version for your release line, for example:npm install next@15.0.7
nextnpm
Affected
>=15.1.10 <15.1.11
Fixed in
15.1.11
Update to the fixed version for your release line, for example:npm install next@15.1.11
nextnpm
Affected
>=15.2.7 <15.2.8
Fixed in
15.2.8
Update to the fixed version for your release line, for example:npm install next@15.2.8
nextnpm
Affected
>=15.3.7 <15.3.8
Fixed in
15.3.8
Update to the fixed version for your release line, for example:npm install next@15.3.8
nextnpm
Affected
>=15.4.9 <15.4.10
Fixed in
15.4.10
Update to the fixed version for your release line, for example:npm install next@15.4.10
nextnpm
Affected
>=15.5.8 <15.5.9
Fixed in
15.5.9
Update to the fixed version for your release line, for example:npm install next@15.5.9
nextnpm
Affected
>=15.6.0-canary.59 <15.6.0-canary.60
Fixed in
15.6.0-canary.60
Update to the fixed version for your release line, for example:npm install next@15.6.0-canary.60
nextnpm
Affected
>=16.0.9 <16.0.10
Fixed in
16.0.10
Update to the fixed version for your release line, for example:npm install next@16.0.10
nextnpm
Affected
>=16.1.0-canary.17 <16.1.0-canary.19
Fixed in
16.1.0-canary.19
Update to the fixed version for your release line, for example:npm install next@16.1.0-canary.19

Details

It was discovered that the fix for CVE-2025-55184 in React Server Components was incomplete and did not fully mitigate denial-of-service conditions across all payload types. As a result, certain crafted inputs could still trigger excessive resource consumption.

This vulnerability affects React versions 19.0.2, 19.1.3, and 19.2.2, as well as frameworks that bundle or depend on these versions, including Next.js 13.x, 14.x, 15.x, and 16.x when using the App Router. The issue is tracked upstream as CVE-2025-67779.

A malicious actor can send a specially crafted HTTP request to a Server Function endpoint that, when deserialized, causes the React Server Components runtime to enter an infinite loop. This can lead to sustained CPU consumption and cause the affected server process to become unresponsive, resulting in a denial-of-service condition in unpatched environments.

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.