--- title: CISA warns of actively exploited RCE flaws in Joomla... description: CISA has added two actively exploited RCE vulnerabilities in Joomla extensions to its Known Exploited Vulnerabilities catalog. CVE-2026-48939 affects the... canonical: https://daily.dev/posts/cisa-warns-of-actively-exploited-rce-flaws-in-joomla-extensions-4dw9npjwg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: CISA warns of actively exploited RCE flaws in Joomla extensions | daily.dev og:description: CISA has added two actively exploited RCE vulnerabilities in Joomla extensions to its Known Exploited Vulnerabilities catalog. CVE-2026-48939 affects the... og:url: https://daily.dev/posts/cisa-warns-of-actively-exploited-rce-flaws-in-joomla-extensions-4dw9npjwg og:image: https://api.daily.dev/og/posts/4dW9npJWG.png og:image:alt: CISA warns of actively exploited RCE flaws in Joomla extensions 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 warns of actively exploited RCE flaws in Joomla extensions **[BleepingComputer](https://daily.dev/sources/bleepingcomputer)** · 2 min read · 0 upvotes · 0 comments ## Summary CISA has added two actively exploited RCE vulnerabilities in Joomla extensions to its Known Exploited Vulnerabilities catalog. CVE-2026-48939 affects the iCagenda event scheduling extension, and CVE-2026-56291 affects the Balbooa Forms drag-and-drop form builder. Both flaws involve unrestricted file upload functionality that allows attackers to upload PHP scripts and achieve remote code execution. Both were exploited as zero-days before patches were released. Fixes are available in iCagenda 4.0.8/3.9.15 and Balbooa Forms 2.4.1. Federal agencies were given a three-day deadline to apply patches. ## Full article daily.dev links to this article rather than hosting it. 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