--- title: Critical Ruflo flaw lets attackers hijack AI agents... description: A critical unauthenticated vulnerability (CVE-2026-59726, CVSS 10.0) in the open-source AI agent platform Ruflo exposes its MCP Bridge by default, allowing... canonical: https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Critical Ruflo flaw lets attackers hijack AI agents through exposed MCP bridge | daily.dev og:description: A critical unauthenticated vulnerability (CVE-2026-59726, CVSS 10.0) in the open-source AI agent platform Ruflo exposes its MCP Bridge by default, allowing... og:url: https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj og:image: https://api.daily.dev/og/posts/Svn9ETJMJ.png og:image:alt: Critical Ruflo flaw lets attackers hijack AI agents through exposed MCP bridge 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. # Critical Ruflo flaw lets attackers hijack AI agents through exposed MCP bridge **[CSO Online](https://daily.dev/sources/csoonline)** · 5 min read · 0 upvotes · 0 comments ## Summary A critical unauthenticated vulnerability (CVE-2026-59726, CVSS 10.0) in the open-source AI agent platform Ruflo exposes its MCP Bridge by default, allowing attackers to execute arbitrary code, steal LLM API keys, access user conversations, hijack AI agents, and poison persistent AI memory — all via a single HTTP request. The MCP Bridge, an Express.js server handling all 233 tool invocations, lacked authentication on its /mcp endpoint. Researchers from Noma Security demonstrated full compromise against a default AWS EC2 deployment, including AI memory poisoning via Ruflo's AgentDB. Ruflo patched the issue within hours by binding the bridge to loopback by default. Security experts warn the broader MCP ecosystem has prioritized ease of setup over authentication, and that AI memory poisoning represents a novel persistence threat not addressed by patching alone. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Azure DevOps MCP Flaw: How to Lock Down Your AI Review Agent Before Microsoft Patches It](https://daily.dev/posts/azure-devops-mcp-flaw-how-to-lock-down-your-ai-review-agent-before-microsoft-patches-it-7jfkllz1z) · Latest Hacking News · 0 upvotes · 0 comments - [AI agent security: four July attacks, one shared flaw](https://daily.dev/posts/ai-agent-security-four-july-attacks-one-shared-flaw-cpad7rmrf) · The Next Web · 0 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#vulnerability](https://daily.dev/tags/vulnerability), [#mcp](https://daily.dev/tags/mcp), [#prompt-injection](https://daily.dev/tags/prompt-injection) [View this post on daily.dev](https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj) ```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":"Critical Ruflo flaw lets attackers hijack AI agents through exposed MCP bridge","url":"https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj"},"datePublished":"2026-07-30T12:30:43.288Z","dateModified":"2026-07-30T12:31:57.899Z","description":"A critical unauthenticated vulnerability (CVE-2026-59726, CVSS 10.0) in the open-source AI agent platform Ruflo exposes its MCP Bridge by default, allowing...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5ca7f991b881ea708d3b2c086e1f8538?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5ca7f991b881ea708d3b2c086e1f8538?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"CSO Online","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":"CSO Online","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/98667e4b5cac46cf9c470819c6cf71cd","url":"https://daily.dev/sources/csoonline"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/critical-ruflo-flaw-lets-attackers-hijack-ai-agents-through-exposed-mcp-bridge-svn9etjmj","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-agents,vulnerability,mcp,prompt-injection","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"CSO Online","item":"https://daily.dev/sources/csoonline"},{"@type":"ListItem","position":3,"name":"Critical Ruflo flaw lets attackers hijack AI agents through exposed MCP bridge"}]} ```