CVE-2025-67779
"React Server Components Denial of Service Vulnerability"
Description
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.
INFO
Published Date :
Dec. 12, 2025, 12:15 a.m.
Last Modified :
Dec. 12, 2025, 12:15 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-67779
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 4fc57720-52fe-4431-a0fb-3d2c8747b827 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update React Server Components to a non-vulnerable version.
- Apply the vendor-provided patch for CVE-2025-55184.
- Verify the denial of service vulnerability is mitigated.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-67779.
| URL | Resource |
|---|---|
| https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components | |
| https://www.facebook.com/security/advisories/cve-2025-67779 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-67779 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-67779
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-67779 vulnerability anywhere in the article.
-
Daily CyberSecurity
React Patches Two New Flaws Risking Server-Crashing DoS and Source Code Disclosure
The security saga surrounding React Server Components continues this week. Just days after the React team patched a critical remote code execution (RCE) flaw, security researchers digging into those v ... Read more
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CybersecurityNews
New Vulnerabilities in React Server Components Allow DoS Attacks and Source Code Leaks
Less than a week after addressing a critical Remote Code Execution (RCE) vulnerability, the React team has disclosed three additional security flaws affecting React Server Components (RSC). Security r ... Read more
The following table lists the changes that have been made to the
CVE-2025-67779 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Dec. 12, 2025
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added Reference https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components Added Reference https://www.facebook.com/security/advisories/cve-2025-67779