{"id":62604,"date":"2026-06-14T23:06:23","date_gmt":"2026-06-14T23:06:23","guid":{"rendered":"https:\/\/zero.redgem.net\/?p=62604"},"modified":"2026-06-14T23:06:23","modified_gmt":"2026-06-14T23:06:23","slug":"rubylouvre-avalon-template-filter-indexjs-prototype-pollution","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=62604","title":{"rendered":"RubyLouvre avalon Template Filter index.js prototype pollution_CVE-2026-12209"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src\/filters\/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.&#8221;,&#8221;published&#8221;:&#8221;2026-06-15T02:15:07.361Z&#8221;,&#8221;modified&#8221;:&#8221;2026-06-15T02:15:07.361Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;RubyLouvre avalon Template Filter index.js prototype pollution&#8221;,&#8221;source&#8221;:&#8221;VulDB&#8221;,&#8221;references&#8221;:&#8221;https:\/\/vuldb.com\/vuln\/370851\\nhttps:\/\/vuldb.com\/vuln\/370851\/cti\\nhttps:\/\/vuldb.com\/cve\/CVE-2026-12209\\nhttps:\/\/vuldb.com\/submit\/832447\\nhttps:\/\/github.com\/OriginSecurityX\/avalon-filter-rce&#8221;,&#8221;id&#8221;:&#8221;CVE-2026-12209&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:[&#8220;CWE-1321&#8243;,&#8221;CWE-94&#8243;],&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;RubyLouvre avalon 2.2.0\\nRubyLouvre avalon 2.2.1\\nRubyLouvre avalon 2.2.2\\nRubyLouvre avalon 2.2.3\\nRubyLouvre avalon 2.2.4\\nRubyLouvre avalon 2.2.5\\nRubyLouvre avalon 2.2.6\\nRubyLouvre avalon 2.2.7\\nRubyLouvre avalon 2.2.8\\nRubyLouvre avalon 2.2.9\\nRubyLouvre avalon 2.2.10&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:6.9,&#8221;severity&#8221;:&#8221;MEDIUM&#8221;,&#8221;vector&#8221;:&#8221;CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:N\/VI:L\/VA:N\/SC:N\/SI:N\/SA:N\/E:P&#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;avalon&#8221;,&#8221;version&#8221;:&#8221;2.2.0&#8243;,&#8221;vendor&#8221;:&#8221;RubyLouvre&#8221;,&#8221;ai_description&#8221;:&#8221;&#8221;,&#8221;ai_severity&#8221;:&#8221;&#8221;,&#8221;ai_vendor&#8221;:&#8221;&#8221;,&#8221;ai_product&#8221;:&#8221;&#8221;,&#8221;ai_version&#8221;:&#8221;&#8221;,&#8221;ai_score&#8221;:0}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src\/filters\/index.js of the&#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":[6,8,48,12,21,13,7,11,5],"class_list":["post-62604","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-69","tag-exploit","tag-medium","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>RubyLouvre avalon Template Filter index.js prototype pollution_CVE-2026-12209 - 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=62604\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RubyLouvre avalon Template Filter index.js prototype pollution_CVE-2026-12209 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. 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