CVE•Published 2025-12-12•Modified 2026-10-07•1 article on news•5 live references•NVD data
CVE-2025-67779Facebook · React
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
97
Exploit Prediction Scoring System · top 3% of all CVEs
Description
It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
Timeline
Published 2025-12-12
Modified 2026-10-07
External references
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-2025-67779Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Facebook React" version:"19.0.2"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"React"HTTP body or banner mentions "React" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2025-67779Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-67779Censys host search filtered to this CVE id.
grep.app
CVE-2025-67779Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-67779GitHub code search for direct mentions.
Google dork
"CVE-2025-67779" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (8)
CVE-2025-677798 repos
theori-io/reactguardPython
ReactGuard provides framework- and vulnerability-detection tooling for CVE-2025-55182 (React2Shell)
williavs/nextjs-security-updateShell
Batch upgrade all your Next.js apps to patched versions - fight back against CVE-2025-55183/55184/67779
abdozkaya/rsc-security-auditorTypeScript
🛡️ Audit your Next.js & React Server Components stack for critical vulnerabilities (CVE-2025-66478, CVE-2025-55184). Detects risks & generates fix commands. 100% Client-side.
nxgn-kd01/react2shell-scannerShell
Detect CVE-2025-55182 (React2Shell) RCE vulnerability in React Server Components. Fast, accurate scanner with zero false positives.
logesh-GIT001/CVE-2025-55182unknown
"One crafted HTTP request can compromise your entire server." — React Security Team, Dec 2025
lance0/latchTypeScript
Latch is a lightweight, security-minded authentication library for Next.js that implements OpenID Connect the right way — PKCE, refresh tokens, cookie sealing — and works in Azure …
1imn1/rsc-exposure-auditPython
Black-box exposure audit for Next.js / React Server Components (RSC) endpoints (non-exploit).
amoz33/FlexiERP_Edu_AppTypeScript
Flexi Enterprise Resource Planning (ERP) School Management Software