{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/vendors/fluxbox/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:fluxbox:fluxbox:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-123784"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Fluxbox (\u003c= 1.3.7)"],"_cs_severities":["high"],"_cs_tags":["vulnerability","remote-code-execution","linux"],"_cs_type":"advisory","_cs_vendors":["Fluxbox"],"content_html":"\u003cp\u003eFluxbox through version 1.3.7 contains an OS command injection vulnerability located within the RootTheme::reconfigTheme() function. The vulnerability is triggered when a user loads a style file containing maliciously crafted background pixmap paths, directory names, or gradient texture strings. These values are unsafely concatenated into an fbsetbg command and executed via a shell, leading to potential arbitrary command execution in the context of the user running Fluxbox.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows for arbitrary code execution with the privileges of the user running the window manager.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdentify all systems running Fluxbox 1.3.7 or earlier within your environment.\u003c/li\u003e\n\u003cli\u003ePrioritize updating to the patched version of Fluxbox as soon as it is released by the maintainers.\u003c/li\u003e\n\u003cli\u003eUntil a patch is applied, restrict access to custom style files and verify the integrity of any style configurations used by users.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-11-06T17:26:13Z","date_published":"2026-11-06T17:26:13Z","id":"https://feed.craftedsignal.io/briefs/2026-11-fluxbox-rce/","summary":"Fluxbox versions 1.3.7 and earlier are vulnerable to OS command injection via crafted style files, allowing arbitrary command execution through unsafe concatenation in the fbsetbg utility.","title":"Fluxbox: OS command injection in RootTheme::reconfigTheme (CVE-2026-123784)","url":"https://feed.craftedsignal.io/briefs/2026-11-fluxbox-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Fluxbox","version":"https://jsonfeed.org/version/1.1"}