{"id":42962,"date":"2026-04-12T02:26:43","date_gmt":"2026-04-12T02:26:43","guid":{"rendered":"http:\/\/localhost\/?p=42962"},"modified":"2026-04-12T02:26:43","modified_gmt":"2026-04-12T02:26:43","slug":"liquidjs-has-a-memory-limit-bypass-via-quadratic-amplification-in-replace-filter","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=42962","title":{"rendered":"LiquidJS has a Memory Limit Bypass via Quadratic Amplification in `replace` Filter_CVE-2026-34166"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;LiquidJS is a Shopify \/ GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, the replace filter in LiquidJS incorrectly accounts for memory usage when the memoryLimit option is enabled. It charges str.length + pattern.length + replacement.length bytes to the memory limiter, but the actual output from str.split(pattern).join(replacement) can be quadratically larger when the pattern occurs many times in the input string. This allows an attacker who controls template content to bypass the memoryLimit DoS protection with approximately 2,500x amplification, potentially causing out-of-memory conditions. 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Prior to 10.25.3, the replace filter in LiquidJS incorrectly accounts for memory&#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":[6,8,145,12,71,13,7,11,5],"class_list":["post-42962","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-37","tag-exploit","tag-low","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>LiquidJS has a Memory Limit Bypass via Quadratic Amplification in `replace` Filter_CVE-2026-34166 - 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=42962\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LiquidJS has a Memory Limit Bypass via Quadratic Amplification in `replace` Filter_CVE-2026-34166 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;LiquidJS is a Shopify \/ GitHub Pages compatible template engine in pure JavaScript. 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