--- title: CISA flags Apache ActiveMQ flaw as actively exploited in... description: CISA has added CVE-2026-34197, a high-severity Apache ActiveMQ remote code execution vulnerability, to its Known Exploited Vulnerabilities catalog. The flaw... canonical: https://daily.dev/posts/cisa-flags-apache-activemq-flaw-as-actively-exploited-in-attacks-cbqwjatcu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: CISA flags Apache ActiveMQ flaw as actively exploited in attacks | daily.dev og:description: CISA has added CVE-2026-34197, a high-severity Apache ActiveMQ remote code execution vulnerability, to its Known Exploited Vulnerabilities catalog. The flaw... og:url: https://daily.dev/posts/cisa-flags-apache-activemq-flaw-as-actively-exploited-in-attacks-cbqwjatcu og:image: https://api.daily.dev/og/posts/CBQWjAtcU.png og:image:alt: CISA flags Apache ActiveMQ flaw as actively exploited in attacks 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. # CISA flags Apache ActiveMQ flaw as actively exploited in attacks **[BleepingComputer](https://daily.dev/sources/bleepingcomputer)** · 2 min read · 0 upvotes · 0 comments ## Summary CISA has added CVE-2026-34197, a high-severity Apache ActiveMQ remote code execution vulnerability, to its Known Exploited Vulnerabilities catalog. The flaw went undetected for 13 years and was discovered using the Claude AI assistant by Horizon3 researcher Naveen Sunkavally. It stems from improper input validation allowing authenticated attackers to execute arbitrary code. Apache patched it on March 30 in ActiveMQ Classic versions 6.2.3 and 5.19.4. FCEB agencies have until April 30 to patch, and private-sector organizations are also urged to prioritize remediation. Over 7,500 ActiveMQ servers remain exposed online. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [13-year-old bug in ActiveMQ lets hackers remotely execute commands](https://daily.dev/posts/13-year-old-bug-in-activemq-lets-hackers-remotely-execute-commands-ymtqv9pbr) · BleepingComputer · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#vulnerability](https://daily.dev/tags/vulnerability), [#apache-activemq](https://daily.dev/tags/apache-activemq) [View this post on daily.dev](https://daily.dev/posts/cisa-flags-apache-activemq-flaw-as-actively-exploited-in-attacks-cbqwjatcu) ```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":"CISA flags Apache ActiveMQ flaw as actively exploited in attacks","url":"https://daily.dev/posts/cisa-flags-apache-activemq-flaw-as-actively-exploited-in-attacks-cbqwjatcu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/cisa-flags-apache-activemq-flaw-as-actively-exploited-in-attacks-cbqwjatcu"},"datePublished":"2026-04-17T09:42:29.751Z","dateModified":"2026-08-24T06:57:30.387Z","description":"CISA has added CVE-2026-34197, a high-severity Apache ActiveMQ remote code execution vulnerability, to its Known Exploited Vulnerabilities catalog. 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