Medium 5.3Published Dec 11, 2025

CVE-2025-55183An 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: rea…

Updated under an hour ago (Oct 27, 2026, 2:30 AM ET)

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It affects Meta react-server-dom-webpack and 4 other products. Add what you run to find out whether that includes you.

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Every CVE for Meta react-server-dom-webpack

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Meta
NVD analysis: Analyzed
Record last updated: Jan 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Meta react-server-dom-webpack meta:react_server_dom_webpack (from the name)	from 19.0.0 through 19.0.1; from 19.1.0 through 19.1.2; from 19.2.0 through 19.2.1	CNA record
Meta react-server-dom-turbopack meta:react_server_dom_turbopack (from the name)	from 19.0.0 through 19.0.1; from 19.1.0 through 19.1.2; from 19.2.0 through 19.2.1	CNA record
Meta react-server-dom-parcel meta:react_server_dom_parcel (from the name)	from 19.0.0 through 19.0.1; from 19.1.0 through 19.1.2; from 19.2.0 through 19.2.1	CNA record
vercel next.js vercel:next.js	from 15.0.0 before 15.0.7; from 15.1.0 before 15.1.11; from 15.2.0 before 15.2.8; from 15.3.0 before 15.3.8; from 15.4.0 before 15.4.10; from 15.5.0 before 15.5.9; from 16.0.0 before 16.0.10; 15.6.0; and 80 more ranges	NVD
facebook react facebook:react	from 19.0.0 before 19.0.2; from 19.1.0 before 19.1.3; from 19.2.0 before 19.2.2	NVD

References

References

https://www.facebook.com/security/advisories/cve-2025-55183	x-refsource-confirm, vendor-advisory
https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components	x-refsource-confirm, exploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.