# CVE-2025-55183

> CVE-2025-55183. CVSS 5.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-55183
Last updated: 2026-10-07T20:10:01Z

- Published: 2025-12-11 20:04 UTC · Updated: 2026-10-07 20:10 UTC · Assigner: Meta
- CVSS: 5.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS: 64.2%, 99th percentile (scored 2026-10-25)
- CISA KEV: no

## 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.

## Affected vendors and products

- Meta: react-server-dom-parcel
- Meta: react-server-dom-turbopack
- Meta: react-server-dom-webpack

## Tracked companies

- [Vercel](https://rewindex.com/company/vercel.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-55183)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-55183)
- [https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components](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-2025-55183](https://www.facebook.com/security/advisories/cve-2025-55183)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-55183 · Markdown: https://rewindex.com/cve/CVE-2025-55183.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-55183 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:20.425Z