HighGHSA-mwv6-3258-q52c

Next Vulnerable to Denial of Service with Server Components

Published 11 Dec 2025 · Updated 10 Sept 2026

Affected packages

nextnpm
Affected
>=13.3.0 <14.2.34
Fixed in
14.2.34
Update to the fixed version for your release line, for example:npm install next@14.2.34
nextnpm
Affected
>=15.0.0-canary.0 <15.0.6
Fixed in
15.0.6
Update to the fixed version for your release line, for example:npm install next@15.0.6
nextnpm
Affected
>=15.1.1-canary.0 <15.1.10
Fixed in
15.1.10
Update to the fixed version for your release line, for example:npm install next@15.1.10
nextnpm
Affected
>=15.2.0-canary.0 <15.2.7
Fixed in
15.2.7
Update to the fixed version for your release line, for example:npm install next@15.2.7
nextnpm
Affected
>=15.3.0-canary.0 <15.3.7
Fixed in
15.3.7
Update to the fixed version for your release line, for example:npm install next@15.3.7
nextnpm
Affected
>=15.4.0-canary.0 <15.4.9
Fixed in
15.4.9
Update to the fixed version for your release line, for example:npm install next@15.4.9
nextnpm
Affected
>=15.5.1-canary.0 <15.5.8
Fixed in
15.5.8
Update to the fixed version for your release line, for example:npm install next@15.5.8
nextnpm
Affected
>=15.6.0-canary.0 <15.6.0-canary.59
Fixed in
15.6.0-canary.59
Update to the fixed version for your release line, for example:npm install next@15.6.0-canary.59
nextnpm
Affected
>=16.0.0-beta.0 <16.0.9
Fixed in
16.0.9
Update to the fixed version for your release line, for example:npm install next@16.0.9
nextnpm
Affected
>=16.1.0-canary.0 <16.1.0-canary.17
Fixed in
16.1.0-canary.17
Update to the fixed version for your release line, for example:npm install next@16.1.0-canary.17

Details

A vulnerability affects certain React packages for versions 19.0.0, 19.0.1, 19.1.0, 19.1.1, 19.1.2, 19.2.0, and 19.2.1 and frameworks that use the affected packages, including Next.js 15.x and 16.x using the App Router. The issue is tracked upstream as CVE-2025-55184.

A malicious HTTP request can be crafted and sent to any App Router endpoint that, when deserialized, can cause the server process to hang and consume CPU. This can result in denial of service in unpatched environments.

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References

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