--- title: React & Next.js DoS Vulnerability (CVE-2025-55184) Explained description: CVE-2025-55184 is a denial-of-service vulnerability in React Server Components stemming from unsafe handling of the React Flight protocol deserialization... canonical: https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: React & Next.js DoS Vulnerability (CVE-2025-55184) Explained | daily.dev og:description: CVE-2025-55184 is a denial-of-service vulnerability in React Server Components stemming from unsafe handling of the React Flight protocol deserialization... og:url: https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo og:image: https://api.daily.dev/og/posts/4DmwrjgxO.png og:image:alt: React & Next.js DoS Vulnerability (CVE-2025-55184) Explained og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # React & Next.js DoS Vulnerability (CVE-2025-55184) Explained **[Aikido Security](https://daily.dev/sources/aikido-security)** · 4 min read · 0 upvotes · 0 comments ## Summary CVE-2025-55184 is a denial-of-service vulnerability in React Server Components stemming from unsafe handling of the React Flight protocol deserialization layer. An attacker can send a malformed RSC request to trigger an infinite loop or hung server state, taking the app offline without needing code execution. The flaw is related to the earlier React2Shell RCE (CVE-2025-55182) and was discovered during follow-up audits. An incomplete initial patch led to a second CVE (CVE-2025-67779), meaning teams that patched early may still be exposed. Apps using Next.js App Router or any RSC-enabled framework are most at risk. Remediation requires upgrading to the latest patched React and Next.js releases and re-scanning to confirm both CVEs are fully addressed. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Critical RSC Bugs in React and Next.js Allow Unauthenticated Remote Code Execution](https://daily.dev/posts/critical-rsc-bugs-in-react-and-next-js-allow-unauthenticated-remote-code-execution-rzvbskftj) · The Hacker News · 0 upvotes · 0 comments - [Summary of CVE-2026-23864](https://daily.dev/posts/summary-of-cve-2026-23864-igyaclea7) · Vercel · 36 upvotes · 1 comments --- Tags: [#react](https://daily.dev/tags/react), [#nextjs](https://daily.dev/tags/nextjs) [View this post on daily.dev](https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"React & Next.js DoS Vulnerability (CVE-2025-55184) Explained","url":"https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo"},"datePublished":"2026-03-31T12:25:43.003Z","dateModified":"2026-03-31T12:31:21.980Z","description":"CVE-2025-55184 is a denial-of-service vulnerability in React Server Components stemming from unsafe handling of the React Flight protocol deserialization...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e1bbb9bd8f2eded401c8e7e20e7b6cc8?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e1bbb9bd8f2eded401c8e7e20e7b6cc8?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Aikido Security","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Aikido Security","logo":"https://media.daily.dev/image/upload/s--vJDqDYv_--/f_auto,q_auto/v1774959928/logos/aikido-security?_a=BAMAMiWQ0","url":"https://daily.dev/sources/aikido-security"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/react-next-js-dos-vulnerability-cve-2025-55184-explained-4dmwrjgxo","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"react,nextjs","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Aikido Security","item":"https://daily.dev/sources/aikido-security"},{"@type":"ListItem","position":3,"name":"React & Next.js DoS Vulnerability (CVE-2025-55184) Explained"}]} ```