--- title: CVE-2026-54659 (pagy): Pagy I18n locale option is not... description: CVE-2026-54659 is a path traversal vulnerability in the Pagy Ruby pagination gem (versions 43.0.0–43.5.5). The `Pagy::I18n.locale=` method did not validate its... canonical: https://daily.dev/posts/cve-2026-54659-pagy-pagy-i18n-locale-option-is-not-validated-before-being-used-in-a-file-path-f5rqol9mj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: CVE-2026-54659 (pagy): Pagy I18n locale option is not validated before being used in a file path | daily.dev og:description: CVE-2026-54659 is a path traversal vulnerability in the Pagy Ruby pagination gem (versions 43.0.0–43.5.5). The `Pagy::I18n.locale=` method did not validate its... og:url: https://daily.dev/posts/cve-2026-54659-pagy-pagy-i18n-locale-option-is-not-validated-before-being-used-in-a-file-path-f5rqol9mj og:image: https://api.daily.dev/og/posts/F5rQoL9Mj.png og:image:alt: CVE-2026-54659 (pagy): Pagy I18n locale option is not validated before being used in a file path 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. # CVE-2026-54659 (pagy): Pagy I18n locale option is not validated before being used in a file path **[RUBYLAND](https://daily.dev/sources/rubyla)** · 1 min read · 1 upvotes · 0 comments ## Summary CVE-2026-54659 is a path traversal vulnerability in the Pagy Ruby pagination gem (versions 43.0.0–43.5.5). The `Pagy::I18n.locale=` method did not validate its argument before using it as a file path component to load a locale dictionary file. Applications that pass unsanitized user input (e.g., `params[:locale]`) to this method are vulnerable to a file-existence oracle and server-side read of attacker-chosen `.yml` files (CWE-22/CWE-200). The fix is available in version 43.5.6. Only apps using untrusted input for locale assignment are affected. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [CVE-2026-49342 \(yard\): YARD static cache reads raw traversal paths before router sanitization](https://daily.dev/posts/cve-2026-49342-yard-yard-static-cache-reads-raw-traversal-paths-before-router-sanitization-va2iyxxx2) · RUBYLAND · 0 upvotes · 0 comments - [Path traversal flaw in AI dev platform Langflow exploited in attacks](https://daily.dev/posts/path-traversal-flaw-in-ai-dev-platform-langflow-exploited-in-attacks-spteyrcl6) · BleepingComputer · 0 upvotes · 0 comments - [Critical Langflow Path Traversal Flaw Exploited for Unauthenticated RCE](https://daily.dev/posts/critical-langflow-path-traversal-flaw-exploited-for-unauthenticated-rce-fuqzjitk7) · Orca Security Blog · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#ruby](https://daily.dev/tags/ruby) [View this post on daily.dev](https://daily.dev/posts/cve-2026-54659-pagy-pagy-i18n-locale-option-is-not-validated-before-being-used-in-a-file-path-f5rqol9mj) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"CVE-2026-54659 (pagy): Pagy I18n locale option is not validated before being used in a file path","url":"https://daily.dev/posts/cve-2026-54659-pagy-pagy-i18n-locale-option-is-not-validated-before-being-used-in-a-file-path-f5rqol9mj","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/cve-2026-54659-pagy-pagy-i18n-locale-option-is-not-validated-before-being-used-in-a-file-path-f5rqol9mj"},"datePublished":"2026-07-31T18:20:42.433Z","dateModified":"2026-07-31T18:45:43.146Z","description":"CVE-2026-54659 is a path traversal vulnerability in the Pagy Ruby pagination gem (versions 43.0.0–43.5.5). 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