{"id":48875,"date":"2026-04-22T20:41:57","date_gmt":"2026-04-22T20:41:57","guid":{"rendered":"http:\/\/localhost\/?p=48875"},"modified":"2026-04-22T20:41:57","modified_gmt":"2026-04-22T20:41:57","slug":"rclone-unauthenticated-optionsset-allows-runtime-auth-bypass-leading-to-sensitive-operations-and-com","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=48875","title":{"rendered":"Rclone: Unauthenticated options\/set allows runtime auth bypass, leading to sensitive operations and command execution_CVE-2026-41176"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options\/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.&#8221;,&#8221;published&#8221;:&#8221;2026-04-22T23:57:54.075Z&#8221;,&#8221;modified&#8221;:&#8221;2026-04-22T23:57:54.075Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;Rclone: Unauthenticated options\/set allows runtime auth bypass, leading to sensitive operations and command execution&#8221;,&#8221;source&#8221;:&#8221;GitHub_M&#8221;,&#8221;references&#8221;:&#8221;https:\/\/github.com\/rclone\/rclone\/security\/advisories\/GHSA-25qr-6mpr-f7qx\\nhttps:\/\/github.com\/rclone\/rclone\/blob\/bf55d5e6d37fd86164a87782191f9e1ffcaafa82\/fs\/rc\/config.go\\nhttps:\/\/github.com\/rclone\/rclone\/blob\/bf55d5e6d37fd86164a87782191f9e1ffcaafa82\/fs\/rc\/rcserver\/rcserver.go&#8221;,&#8221;id&#8221;:&#8221;CVE-2026-41176&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:[&#8220;CWE-306&#8243;],&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;rclone rclone \\u003e= 1.45.0, \\u003c 1.73.5&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:9.2,&#8221;severity&#8221;:&#8221;CRITICAL&#8221;,&#8221;vector&#8221;:&#8221;CVSS:4.0\/AV:N\/AC:L\/AT:P\/PR:N\/UI:N\/VC:H\/VI:H\/VA:H\/SC:N\/SI:N\/SA:N&#8221;,&#8221;version&#8221;:&#8221;4.0&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;rclone&#8221;,&#8221;version&#8221;:&#8221;\\u003e= 1.45.0, \\u003c 1.73.5&#8243;,&#8221;vendor&#8221;:&#8221;rclone&#8221;,&#8221;ai_description&#8221;:&#8221;Unauthenticated options\/set allows runtime auth bypass, leading to sensitive operations and command execution&#8221;,&#8221;ai_severity&#8221;:&#8221;Critical&#8221;,&#8221;ai_vendor&#8221;:&#8221;Rclone&#8221;,&#8221;ai_product&#8221;:&#8221;Rclone&#8221;,&#8221;ai_version&#8221;:&#8221;1.45.0 &#8211; 1.73.5&#8243;,&#8221;ai_score&#8221;:9.2}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options\/set` is exposed without `AuthRequired:&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[9,6,8,42,12,13,7,11,5],"class_list":["post-48875","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-critical","tag-cve","tag-cvss","tag-cvss-92","tag-exploit","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rclone: Unauthenticated options\/set allows runtime auth bypass, leading to sensitive operations and command execution_CVE-2026-41176 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=48875\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rclone: Unauthenticated options\/set allows runtime auth bypass, leading to sensitive operations and command execution_CVE-2026-41176 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Rclone is a command-line program to sync files and directories to and from different cloud storage providers. 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