Meta react-server-dom-parcel up to 19.0.2/19.1.3/19.2.2 React Server deserialization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Meta react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack up to 19.0.2/19.1.3/19.2.2. The affected element is an unknown function of the component React Server Component. Executing a manipulation can lead to deserialization. This vulnerability is registered as CVE-2025-67779. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in Meta react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack up to 19.0.2/19.1.3/19.2.2 and classified as problematic. This vulnerability affects some unknown functionality of the component React Server Component. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at facebook.com. This vulnerability was named CVE-2025-67779 since 12/11/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/14/2025).

The vulnerability scanner Nessus provides a plugin with the ID 278532 (Node.js React Server Components Denial of Service (CVE-2025-67779)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202512-2253), Tenable (278532) and CERT Bund (WID-SEC-2025-2835). Once again VulDB remains the best source for vulnerability data.

Affected

  • Vercel Next.js
  • Open Source React

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Meta): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 278532
Nessus Name: Node.js React Server Components Denial of Service (CVE-2025-67779)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/11/2025 CVE reserved
12/12/2025 +1 days Advisory disclosed
12/12/2025 +0 days VulDB entry created
12/14/2025 +2 days VulDB entry last update

Sourcesinfo

Advisory: facebook.com
Status: Not defined

CVE: CVE-2025-67779 (🔒)
GCVE (CVE): GCVE-0-2025-67779
GCVE (VulDB): GCVE-100-336100
CERT Bund: WID-SEC-2025-2835 - Vercel Next.js und React Server Components: Mehrere Schwachstellen
CNNVD: CNNVD-202512-2253 - Meta React Server Components 安全漏洞

Entryinfo

Created: 12/12/2025 07:28
Updated: 12/14/2025 16:46
Changes: 12/12/2025 07:28 (62), 12/12/2025 15:11 (7), 12/12/2025 15:48 (6), 12/13/2025 17:17 (2), 12/13/2025 23:04 (1), 12/14/2025 16:46 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!