CVE•Published 2025-12-11•Modified 2026-10-07•1 article on news•4 live references•NVD data

CVE-2025-55183Vercel · Next.js

Vulnerability data via NVD (ingested)

CVSS v3.1

5.3

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 1% of all CVEs

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.

Timeline

Published 2025-12-11

Modified 2026-10-07

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-55183

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Vercel Next.js"

All exposed Vercel Next.js instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Next.js"

HTTP body or banner mentions "Next.js" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-55183