CVE-2025-55182: Meta React Server Components Remote Code Execution Vulnerability

Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-df3dea9f03a7, updated 2026-11-02T23:39:54.475Z.

CISA Known Exploited Vulnerabilities

Name
Meta React Server Components Remote Code Execution Vulnerability
Vendor
Meta
Product
React Server Components
Added to the catalog
2025-12-05
Due date for US federal agencies
2025-12-12
Catalog version
2026.10.30

Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA marks this vulnerability as known to be used in ransomware campaigns. CISA does not say which group used it.

Links in CISA's notes

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status
Analyzed
Published
2025-12-03T16:15:56.463
Last modified
2026-10-18T17:10:00.110
Weaknesses
CWE-502

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 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.

MetricScoreSeverityVectorScored by
CVSS 3.110CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H[email protected] (Secondary)

References

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:22.836Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-55182

CVE record

Assigner
Meta
State
PUBLISHED
Published
2025-12-03T15:40:56.894Z
Updated
2026-10-07T17:58:00.859Z
Problem types
Deserialization of Untrusted Data (CWE-502)

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 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.

References

Read on 2026-11-03T02:17:18.403Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/55xxx/CVE-2025-55182.json

GitHub Advisory Database

GHSA-fv66-9v8q-g76r: React Server Components are Vulnerable to RCE

Severity (GitHub)
critical
CVSS
10 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-502
Published
2025-12-03T19:07:39Z
Updated
2025-12-09T16:53:25Z
  • npm react-server-dom-webpack: affected >= 19.1.0, < 19.1.2, first patched 19.1.2
  • npm react-server-dom-webpack: affected = 19.2.0, first patched 19.2.1
  • npm react-server-dom-turbopack: affected >= 19.1.0, < 19.1.2, first patched 19.1.2
  • npm react-server-dom-turbopack: affected = 19.2.0, first patched 19.2.1
  • npm react-server-dom-parcel: affected >= 19.1.0, < 19.1.2, first patched 19.1.2
  • npm react-server-dom-parcel: affected = 19.2.0, first patched 19.2.1
  • npm react-server-dom-turbopack: affected = 19.0.0, first patched 19.0.1
  • npm react-server-dom-parcel: affected = 19.0.0, first patched 19.0.1
  • npm react-server-dom-webpack: affected = 19.0.0, first patched 19.0.1

### Impact

There is an unauthenticated remote code execution vulnerability in React Server Components.

We recommend upgrading immediately.

The vulnerability is present in versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 of:
* [react-server-dom-webpack](https://www.npmjs.com/package/react-server-dom-webpack)
* [react-server-dom-parcel](https://www.npmjs.com/package/react-server-dom-parcel)
* [react-server-dom-turbopack](https://www.npmjs.com/package/react-server-dom-turbopack?activeTab=readme)

### Patches

A fix was introduced in versions [19.0.1](https://github.com/facebook/react/releases/tag/v19.0.1), [19.1.2](https://github.com/facebook/react/releases/tag/v19.1.2), and [19.2.1](https://github.com/facebook/react/releases/tag/v19.2.1). 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](https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components) for more information and upgrade instructions.

Read on 2026-11-03T03:52:47.706Z under licence ghsa-cc-by-4.0@9e5f1b3c from https://api.github.com/advisories/GHSA-fv66-9v8q-g76r

Also known as / affected packages

GHSA-fv66-9v8q-g76r

Also known as: CVE-2025-55182. OSV.dev record, GitHub advisory.

  • npm react-server-dom-webpack: introduced 19.0.0, fixed 19.0.1
  • npm react-server-dom-webpack: introduced 19.1.0, fixed 19.1.2
  • npm react-server-dom-webpack: introduced 19.2.0, fixed 19.2.1
  • npm react-server-dom-turbopack: introduced 19.0.0, fixed 19.0.1
  • npm react-server-dom-turbopack: introduced 19.1.0, fixed 19.1.2
  • npm react-server-dom-turbopack: introduced 19.2.0, fixed 19.2.1
  • npm react-server-dom-parcel: introduced 19.0.0, fixed 19.0.1
  • npm react-server-dom-parcel: introduced 19.1.0, fixed 19.1.2
  • npm react-server-dom-parcel: introduced 19.2.0, fixed 19.2.1

Read on 2026-11-03T02:50:50.421Z under licence ghsa-cc-by-4.0@9e5f1b3c from https://api.osv.dev/v1/vulns/GHSA-fv66-9v8q-g76r

Detection rules (SigmaHQ)

SigmaHQ rules whose own tags name this CVE. Each rule page shows the rule as its author published it.

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

CWE-502: Deserialization of Untrusted Data

D3FEND ontology version 1.6.0.

Read on 2026-11-02T23:56:57.230Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-502.json

MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/

Sources and licences

  • CISA

    Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.

    CC0 1.0 Universal

  • National Vulnerability Database (NIST)

    This product uses the NVD API but is not endorsed or certified by the NVD.

    NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)

  • CVE Program, The MITRE Corporation

    Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

    CVE Program Terms of Use ("CVE Usage" licence)

  • GitHub Advisory Database

    Source: GitHub Advisory Database, https://github.com/advisories/GHSA-fv66-9v8q-g76r, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Changes: fields selected and reformatted by ransomware-tracker.com.

    CC BY 4.0

  • GitHub Advisory Database via OSV.dev

    GHSA-fv66-9v8q-g76r: GitHub Advisory Database, https://github.com/advisories/GHSA-fv66-9v8q-g76r. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), provided as is, without warranties. Retrieved via OSV.dev (https://osv.dev/vulnerability/GHSA-fv66-9v8q-g76r), which enriches records; fields selected and reformatted by ransomware-tracker.com.

    CC BY 4.0

  • SigmaHQ

    "Windows Suspicious Child Process from Node.js - React2Shell" by Swachchhanda Shrawan Poudel (Nextron Systems), Nasreddine Bencherchali (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2025/Exploits/CVE-2025-55182/proc_creation_win_exploit_cve_2025_55182_susp_nodejs_server_child_process.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

  • SigmaHQ

    "Linux Suspicious Child Process from Node.js - React2Shell" by Swachchhanda Shrawan Poudel (Nextron Systems), Nasreddine Bencherchali (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2025/Exploits/CVE-2025-55182/proc_creation_lnx_exploit_cve_2025_55182_susp_nodejs_server_child_process.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

  • MITRE D3FEND

    MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
    "The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/

    MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT

Cite this page

Dragons Eye Ransomware Tracker, "CVE-2025-55182: Meta React Server Components Remote Code Execution Vulnerability",
entity page, dataset version ref-df3dea9f03a7, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2025-55182 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-10-18T17:10:00.110.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2026-10-07T17:58:00.859Z.
Underlying source: GitHub Advisory Database, GHSA-fv66-9v8q-g76r, updated 2025-12-09T16:53:25Z.
Underlying source: GitHub Advisory Database, GHSA-fv66-9v8q-g76r, via OSV.dev, modified 2025-12-09T17:46:07.154758Z.
Underlying source: SigmaHQ rule 271de298-cc0e-4842-acd8-079a0a99ea65, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: SigmaHQ rule c70834fa-fb9d-4aa0-9e7d-45ceed36f3f7, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: MITRE D3FEND, ontology version 1.6.0.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.

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