---
title: "CVE-2025-55183: Deserialization of Untrusted Data | CubePath"
description: "An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0…"
language: en
source: https://cubepath.com/security/cve/CVE-2025-55183
---

# CVE-2025-55183: Deserialization of Untrusted Data | CubePath

## Description

An information leak vulnerability exists in specific configurations of 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. A specifically crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.

Official description from the CVE record, published by Meta. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-55183)

## Key data

### CVSS 3.1 Medium 5.3

Score published by Meta in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None      | No account or privileges are needed.                                                |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | Low       | Limited effect on the secrecy of data.                                              |
| Integrity impact       | None      | No effect on the trustworthiness of data.                                           |
| Availability impact    | None      | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.64233 (64.2% probability)

Percentile

99.2%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Jan 7, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Public proof of concept recorded by CISA

Automatable

yes

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-502](https://cwe.mitre.org/data/definitions/502.html) Deserialization of Untrusted Data

## Affected products

Products listed in the CVE record, as the CNA published them.

- Meta react-server-dom-webpack

  - affected: 19.0.0 up to 19.0.1
  - affected: 19.1.0 up to 19.1.2
  - affected: 19.2.0 up to 19.2.1
- Meta react-server-dom-turbopack

  - affected: 19.0.0 up to 19.0.1
  - affected: 19.1.0 up to 19.1.2
  - affected: 19.2.0 up to 19.2.1
- Meta react-server-dom-parcel

  - affected: 19.0.0 up to 19.0.1
  - affected: 19.1.0 up to 19.1.2
  - affected: 19.2.0 up to 19.2.1

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [facebook.com/security/advisories/cve-2025-55183](https://www.facebook.com/security/advisories/cve-2025-55183)
- [react.dev/blog/2025/12/11/denial-of-service-and-source-code…](https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components)

## Timeline

1. ID reserved Aug 8, 2025
2. Record published Dec 11, 2025
3. Record last updated Jan 7, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:03 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)