CVE-2025-55183
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 64.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 64.23% probability · 99th percentile
- CISA KEV
- Not listed
- Affected
- vercel/next.js · facebook/react
- Source
- cve-assign@fb.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.