CVE-2025-55184
Denial of Service Vulnerability in React Server Components
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
- Record
CVE-2025-55184- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
EUVDEUVD-2025-202877
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
- Record
EUVD-2025-202877- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2m3v-v2m8-q956
Denial of Service Vulnerability in React Server Components
Impact
There is a denial of service vulnerability in React Server Components.
React recommends updating immediately.
The vulnerability exists in versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1 of:
These issues are present in the patches published last week.
Patches
Fixes were back ported to versions 19.0.2, 19.1.3, and 19.2.2.
If you are using any of the above packages please upgrade to any of the fixed versions immediately.
If your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability.
References
See the blog post for more information and upgrade instructions.
- Record
GHSA-2m3v-v2m8-q956- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-502
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8h8q-6873-q5fj
Next.js Vulnerable to Denial of Service with Server Components
A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as CVE-2026-23870.
A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.
- Record
GHSA-8h8q-6873-q5fj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q4gf-8mx6-v5v3
Next.js has a Denial of Service with Server Components
A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as CVE-2026-23869. You can read more about this advisory our this changelog.
A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.
- Record
GHSA-q4gf-8mx6-v5v3- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-02
NVD
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
- Record
CVE-2025-55184- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Show 25 moreShow less
OSV
A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints, which can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
- Record
CVE-2025-55184- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-2m3v-v2m8-q956
Denial of Service Vulnerability in React Server Components
Impact
There is a denial of service vulnerability in React Server Components.
React recommends updating immediately.
The vulnerability exists in versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1 of:
These issues are present in the patches published last week.
Patches
Fixes were back ported to versions 19.0.2, 19.1.3, and 19.2.2.
If you are using any of the above packages please upgrade to any of the fixed versions immediately.
If your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability.
References
See the blog post for more information and upgrade instructions.
- Record
GHSA-2m3v-v2m8-q956- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-502
- Updated
- 2026-11-02
OSVGHSA-8h8q-6873-q5fj
Next.js Vulnerable to Denial of Service with Server Components
A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as CVE-2026-23870.
A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.
- Record
GHSA-8h8q-6873-q5fj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-02
OSVGHSA-q4gf-8mx6-v5v3
Next.js has a Denial of Service with Server Components
A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as CVE-2026-23869. You can read more about this advisory our this changelog.
A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.
- Record
GHSA-q4gf-8mx6-v5v3- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-02
OSVCLSA-2026-1786360051 No score
TuxCare security update for 13 packages (13 CVEs)
TuxCare rebuilt 13 packages to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1786360051- Updated
- 2026-11-02
OSVCLSA-2026-1786388579 No score
TuxCare security update for react-server-dom-esm (4 CVEs)
TuxCare rebuilt react-server-dom-esm to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1786388579- Updated
- 2026-11-03
OSVCLSA-2026-1792161470 No score
TuxCare security update for react-art (4 CVEs)
TuxCare rebuilt react-art to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792161470- Updated
- 2026-11-02
OSVCLSA-2026-1792161493 No score
TuxCare security update for react-is (4 CVEs)
TuxCare rebuilt react-is to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792161493- Updated
- 2026-11-02
OSVCLSA-2026-1792161643 No score
TuxCare security update for react-server-dom-turbopack (4 CVEs)
TuxCare rebuilt react-server-dom-turbopack to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792161643- Updated
- 2026-11-02
OSVCLSA-2026-1792161658 No score
TuxCare security update for react-server-dom-webpack (4 CVEs)
TuxCare rebuilt react-server-dom-webpack to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792161658- Updated
- 2026-11-02
OSVCLSA-2026-1792195727 No score
TuxCare security update for create-next-app (13 CVEs)
TuxCare rebuilt create-next-app to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792195727- Updated
- 2026-11-02
OSVCLSA-2026-1792196726 No score
TuxCare security update for @next/eslint-plugin-next (13 CVEs)
TuxCare rebuilt @next/eslint-plugin-next to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792196726- Updated
- 2026-11-02
OSVCLSA-2026-1792206290 No score
TuxCare security update for @next/bundle-analyzer (13 CVEs)
TuxCare rebuilt @next/bundle-analyzer to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792206290- Updated
- 2026-11-02
OSVCLSA-2026-1792251863 No score
TuxCare security update for react-server-dom-parcel (4 CVEs)
TuxCare rebuilt react-server-dom-parcel to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792251863- Updated
- 2026-11-02
OSVCLSA-2026-1792267917 No score
TuxCare security update for react-dom (4 CVEs)
TuxCare rebuilt react-dom to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792267917- Updated
- 2026-11-02
OSVCLSA-2026-1792272230 No score
TuxCare security update for @next/plugin-storybook (13 CVEs)
TuxCare rebuilt @next/plugin-storybook to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792272230- Updated
- 2026-11-02
OSVCLSA-2026-1792287260 No score
TuxCare security update for react-test-renderer (4 CVEs)
TuxCare rebuilt react-test-renderer to address 4 CVEs. Fixed in 19.2.0-tuxcare.7.
- Record
CLSA-2026-1792287260- Updated
- 2026-11-02
OSVCLSA-2026-1792293000 No score
TuxCare security update for @next/polyfill-module (13 CVEs)
TuxCare rebuilt @next/polyfill-module to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792293000- Updated
- 2026-11-02
OSVCLSA-2026-1792304720 No score
TuxCare security update for @next/polyfill-nomodule (13 CVEs)
TuxCare rebuilt @next/polyfill-nomodule to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792304720- Updated
- 2026-11-02
OSVCLSA-2026-1792326302 No score
TuxCare security update for @next/react-refresh-utils (13 CVEs)
TuxCare rebuilt @next/react-refresh-utils to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792326302- Updated
- 2026-11-02
OSVCLSA-2026-1792338232 No score
TuxCare security update for @next/third-parties (13 CVEs)
TuxCare rebuilt @next/third-parties to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792338232- Updated
- 2026-11-02
OSVCLSA-2026-1792358596 No score
TuxCare security update for @next/codemod (13 CVEs)
TuxCare rebuilt @next/codemod to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792358596- Updated
- 2026-11-02
OSVCLSA-2026-1792364002 No score
TuxCare security update for @next/mdx (13 CVEs)
TuxCare rebuilt @next/mdx to address 13 CVEs. Fixed in 13.5.11-tuxcare.14.
- Record
CLSA-2026-1792364002- Updated
- 2026-11-02
OSVROOT-APP-NPM-GHSA-8h8q-6873-q5fj No score
GHSA-8h8q-6873-q5fj in next - Patched by Root
Root has patched GHSA-8h8q-6873-q5fj in the next package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-GHSA-8h8q-6873-q5fj- Updated
- 2026-11-02
OSVROOT-APP-NPM-GHSA-q4gf-8mx6-v5v3 No score
GHSA-q4gf-8mx6-v5v3 in next - Patched by Root
Root has patched GHSA-q4gf-8mx6-v5v3 in the next package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-GHSA-q4gf-8mx6-v5v3- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
react-server-dom-parcelnpm |
19.0.0 up to 19.0.2 | 19.0.2 |
react-server-dom-turbopacknpm |
19.0.0 up to 19.0.2 | 19.0.2 |
react-server-dom-webpacknpm |
19.0.0 up to 19.0.2 | 19.0.2 |
react-server-dom-parcelnpm |
19.1.0 up to 19.1.3 | 19.1.3 |
react-server-dom-parcelnpm |
19.2.0 up to 19.2.2 | 19.2.2 |
react-server-dom-turbopacknpm |
19.1.0 up to 19.1.3 | 19.1.3 |
react-server-dom-turbopacknpm |
19.2.0 up to 19.2.2 | 19.2.2 |
react-server-dom-webpacknpm |
19.1.0 up to 19.1.3 | 19.1.3 |
react-server-dom-webpacknpm |
19.2.0 up to 19.2.2 | 19.2.2 |
nextnpm |
13.0.0 up to 15.5.16 | 15.5.16 |
Show 25 moreShow less
| Package | Affected | Fixed |
|---|---|---|
nextnpm |
16.0.0 up to 16.2.5 | 16.2.5 |
nextnpm |
13.0.0 up to 15.5.15 | 15.5.15 |
nextnpm |
16.0.0-beta.0 up to 16.2.3 | 16.2.3 |
react-server-dom-esmTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.119.2.0-tuxcare.219.2.0-tuxcare.319.2.0-tuxcare.419.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
react-artTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
react-isTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
react-server-dom-turbopackTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
react-server-dom-webpackTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
create-next-appTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/eslint-plugin-nextTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/bundle-analyzerTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
react-server-dom-parcelTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
react-domTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.119.2.0-tuxcare.219.2.0-tuxcare.319.2.0-tuxcare.419.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
@next/plugin-storybookTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
react-test-rendererTuxCare:npm From an advisory covering 4 CVEs |
19.2.0-tuxcare.0 up to 19.2.0-tuxcare.7, plus listed versions 19.2.019.2.0-tuxcare.519.2.0-tuxcare.6 |
19.2.0-tuxcare.7 |
@next/polyfill-moduleTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/polyfill-nomoduleTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/react-refresh-utilsTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/third-partiesTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/codemodTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
@next/mdxTuxCare:npm From an advisory covering 11 CVEs |
13.5.11-tuxcare.0 up to 13.5.11-tuxcare.14, plus listed versions 13.5.1113.5.11-tuxcare.13 |
13.5.11-tuxcare.14 |
nextRoot:npm |
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@rootio/nextRoot:npm |
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nextRoot:npm |
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@rootio/nextRoot:npm |
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Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | bakhod1r/CVE-2025-55184 | 2025-12-12 |
| PoC in GitHub | ejpir/CVE-2025-55184 | 2025-12-12 |
| PoC in GitHub | hans362/CVE-2025-55184-poc | 2025-12-12 |
| PoC in GitHub | KkHackingLearning/CVE-2025-55184_Testing | 2025-12-13 |
| PoC in GitHub | cybertechajju/CVE-2025-55184-POC-Expolit | 2025-12-13 |
| PoC in GitHub | KingHacker353/CVE-2025-55184 | 2025-12-14 |
| PoC in GitHub | Tarekhshaikh13/CVE-2025-55184 | 2025-12-17 |
| PoC in GitHub | shubham-01-star/OpsGuard-simulation | 2025-12-19 |
| PoC in GitHub | JSH-data/CVE-2025-55184_CVE-2025-67779 | 2026-01-14 |
| Nuclei | React Server Components - Denial of Service |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected, exploits | OSV | |
| affected, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, Nuclei, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-55184 is a high vulnerability (CVSS 7.5) in Facebook React, published December 11, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 66.6%, the 99th percentile. Fixed in react-server-dom-parcel 19.0.2.
References
facebook.com/security/advisories/cve-2025-55184
react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
github.com/KingHacker353/CVE-2025-55184
nvd.nist.gov/vuln/detail/CVE-2025-55184
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vercel.com/changelog/summary-of-cve-2026-23869