CVE-2025-67779

Published Dec 12, 2025

Last updated 3 months ago

Overview

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.
Source
cve-assign@fb.com
NVD status
Modified
Products
react, next.js

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.5
Impact score
3.6
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-502
134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-400

Social media

Hype score
Not currently trending
  1. 🚨 Next.js [—] Dec 22, 2025 Comprehensive Security Advisory on Recent Next.js Vulnerabilities (CVE-2025-55184, CVE-2025-55183, CVE-2025-67779) and Mitigation Strategies Checkout our Threat Intelligence Platform: https://t.co/QuwNtEgYh1... https://t.co/c6A6vTB3Ak

    @transilienceai

    22 Dec 2025

    72 Impressions

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  2. Reactで新たな脆弱性 (CVE-2025-55184 / CVE-2025-67779/CVE-2025-55183) 「React2Shell(CVE-2025-55182)」とは別個の脆弱性 であり、改めてパッチ適用が必要 です。 https://t.co/c28h7dLKXa #セキュリティ対策Lab #セキュリティ #Security #

    @securityLab_jp

    16 Dec 2025

    16 Impressions

    0 Retweets

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  3. Update on React2Shell guidance. After fixes for CVE-2025-55182, additional vulnerabilities were identified in React Server Components (CVE-2025-55183, CVE-2025-55184, CVE-2025-67779). These are not RCE issues, but the original patches do not fully address them and a follow-on

    @Averlon_ai

    15 Dec 2025

    83 Impressions

    1 Retweet

    3 Likes

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  4. #Threat_Research 1⃣. DoS and Source Code Exposure in React Server Components - https://t.co/o3SApLEhEv // After last week's critical patch, three more, but less critical, vulnerabilities were identified in React Server Components (CVE-2025-55184, CVE-2025-67779, CVE-2025-55183

    @ksg93rd

    15 Dec 2025

    223 Impressions

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    2 Likes

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  5. 1. 리엑트 개발 외주를 맡음 2. Denial of Service 취약점이 발견됨 (CVE-2025-55184, CVE-2025-67779) 3. 결과물에 취약점을 사용하고 연락을 기다림 4. Profit https://t.co/CUg6H5qRND

    @H2Owater425

    15 Dec 2025

    72 Impressions

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  6. 🍎Appleがゼロデイ2件を修正、「極めて巧妙な攻撃」で悪用された恐れ:CVE-2025-43529、CVE-2025-14174 🚨Reactの新たな脆弱性によりDoSやソースコードの漏洩が可能になる恐れ(CVE-2025-55184、CVE-2025-67779、CVE-2025-55183)

    @MachinaRecord

    15 Dec 2025

    333 Impressions

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    2 Likes

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  7. 🚨 New React Server Components vulns dropped last week (Dec 11): Researchers found DoS (CVE-2025-55184 & CVE-2025-67779) + source code exposure (CVE-2025-55183) while poking at React2Shell patches. Separate from the RCE—those fixes still hold.

    @anilvermaspeaks

    14 Dec 2025

    51 Impressions

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  8. Another one React Server Components Denial of Service - High Severity: CVE-2025-55184 and CVE-2025-67779 (CVSS 7.5) Source Code Exposure - Medium Severity: CVE-2025-55183 (CVSS 5.3) https://t.co/GbSdu7ZDYe #REACT #Exploit #Security https://t.co/30xwa9eCkz

    @ZoltanSEC

    13 Dec 2025

    48 Impressions

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  9. React team warns of 3 new RSCs vulns: CVE-2025-55184 & CVE-2025-67779 cause infinite loops to crash servers. https://t.co/1vmVXWEOww https://t.co/kDBnmAd4ev

    @MateusGalasso

    13 Dec 2025

    52 Impressions

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  10. بعد أسبوع بس من طلبهم الأول بتحديث المكتبات الضعيفة، فريق React رجع يطلب نفس الشيء مرة ثانية. هالمرة الباحثين اكتشفوا ثغرتين ممكن يكونوا مزعجات. CVE-2025-55184 و CV

    @altmemy199

    12 Dec 2025

    1297 Impressions

    0 Retweets

    14 Likes

    3 Bookmarks

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  11. CVE-2025-67779 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. Reac… https://t.co/vWb89mOv8Q

    @CVEnew

    12 Dec 2025

    24 Impressions

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  12. 🚨React Server Component has discovered more CVEs : - CVE-2025-55184 (DoS) - CVE-2025-67779 (DoS) - CVE-2025-55183 (Source code disclosure) Versions affected : 19.0.0, 19.0.1, 19.0.2, 19.1.0, 19.1.1, 19.1.2, 19.1.2, 19.2.0, 19.2.1 and 19.2.2 of: - react-server-dom-webpack -

    @ValkyriSecurity

    12 Dec 2025

    363 Impressions

    1 Retweet

    6 Likes

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  13. [New] React just found more bugs hiding in its last big patch. 🧩 CVE-2025-55184 & CVE-2025-67779 — can crash servers with one request. 🧩 CVE-2025-55183 — can leak source code from React Server Components. 👀 All discovered while testing the earlier CVE-2025-5518

    @TheHackersNews

    12 Dec 2025

    10589 Impressions

    31 Retweets

    112 Likes

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  14. 🚨 React Server Components [—] Dec 12, 2025 Comprehensive security advisory focusing on multiple recent critical vulnerabilities (including CVE-2025-55182, CVE-2025-55184, CVE-2025-55183, CVE-2025-67779) affecting React Server Components and related frameworks. Detailed... ht

    @transilienceai

    12 Dec 2025

    15 Impressions

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  15. 🚨 BREAKING: React drops new security patches for CVE-2025-55183 & CVE-2025-67779 Two new vulnerabilities discovered: ✅ DoS (CVSS 7.5) - can crash your servers ✅ Source code exposure (CVSS 5.3) - leaks business logic Read Details - https://t.co/lK2IxGUuBw #React2shel

    @cyberkendra

    12 Dec 2025

    81 Impressions

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  16. New React RSC vulnerabilities just dropped! CVE-2025-55184 and CVE-2025-55183, detailed in the latest Next.js & React security bulletins. Initial patches in React 19.0.1/19.1.2/19.2.1 turned out incomplete, leading to a new DoS vuln CVE-2025-67779 https://t.co/xD9Th3fRHk

    @sunggatalimbet

    12 Dec 2025

    370 Impressions

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Configurations

  1. A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint accepts unauthenticated POST requests with the `Next-Resume: 1` header and processes attacker-controlled postponed state data. Two closely related vulnerabilities allow an attacker to crash the server process through memory exhaustion: 1. **Unbounded request body buffering**: The server buffers the entire POST request body into memory using `Buffer.concat()` without enforcing any size limit, allowing arbitrarily large payloads to exhaust available memory. 2. **Unbounded decompression (zipbomb)**: The resume data cache is decompressed using `inflateSync()` without limiting the decompressed output size. A small compressed payload can expand to hundreds of megabytes or gigabytes, causing memory exhaustion. Both attack vectors result in a fatal V8 out-of-memory error (`FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory`) causing the Node.js process to terminate. The zipbomb variant is particularly dangerous as it can bypass reverse proxy request size limits while still causing large memory allocation on the server. To be affected you must have an application running with `experimental.ppr: true` or `cacheComponents: true` configured along with the NEXT_PRIVATE_MINIMAL_MODE=1 environment variable. Strongly consider upgrading to 15.6.0-canary.61 or 16.1.5 to reduce risk and prevent availability issues in Next applications.CVE-2025-59472