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Vulnerabilities

Vulnerability · CVE-2025-67779

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case.

Published Dec 11, 2025 · catalog updated Dec 12, 2025 · Meta

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2025-67779 is not in CISA KEV. FIRST estimates a 19.99% chance of exploitation in the next 30 days. Check whether you run Meta.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
19.99%
Remediation
Advisory link
Affected products
npm react-server-dom-parcel · npm react-server-dom-turbopack · npm react-server-dom-webpack · vendor Meta react-server-dom-webpack 19.0.2 ≤19.0.2

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm react-server-dom-parcel19.0.2, 19.1.3, 19.2.2
  • npm react-server-dom-turbopack19.0.2, 19.1.3, 19.2.2
  • npm react-server-dom-webpack19.0.2, 19.1.3, 19.2.2
  • vendor Meta react-server-dom-webpack 19.0.2 ≤19.0.219.0.2 ≤19.0.2

How to fix CVE-2025-67779

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-67779 is not in CISA KEV. FIRST estimates a 19.99% chance of exploitation in the next 30 days. Check whether you run Meta.

Which versions are affected?

Compare what you have installed with Meta react-server-dom-webpack 19.0.2 ≤19.0.2 19.0.2 ≤19.0.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-502: Deserialization of Untrusted Data. EPSS 19.99%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

React security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 11, 2025 · EUVD

    Detected

    It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may pr

  2. Dec 12, 2025 · EUVD

    Updated

    It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may pr

Sources

  • CVE.orgVulnerability recordCVE-2025-67779

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-67779

    30-day exploitation probability 19.99%

    first.org
  • EUVDVulnerability recordEUVD-2025-202926

    It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads f

    euvd.enisa.europa.eu
  • Maintainer security tabsVendor advisoryGHSA-7gmr-mq3h-m5h9

    ## Impact It was found that the fix to address [CVE-2025-55184](https://github.com/facebook/react/security/advisories/GHSA-2m3v-v2m8-q956) in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. We recommend updating immediately. The vulnerability exists in versions 19.0.2, 19.1.3, and 19.2.2 of: - [react-server-dom-webpack](https://www.npmjs.c

    github.com

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • Maintainer security tabsNov 2, 2026
  • CVE.orgOct 27, 2026
  • EUVDOct 27, 2026