CVE-2026-54659: Path Traversal

Description

Pagy is agnostic pagination in plain Ruby. From 43.0.0 until 43.5.6, Pagy::I18n.locale= in gem/lib/pagy/modules/i18n/i18n.rb stored locale values verbatim and later used them as <locale>.yml path components, allowing untrusted params[:locale] values with absolute paths or ../ sequences to create a file existence and readability oracle for YAML files. This issue is fixed in version 43.5.6.

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Weakness Type (CWE)

CWE-22 Path Traversal

CWE-200 CWE-200

References

Other References

https://github.com/ddnexus/pagy/commit/efcf09690e9fa7d7abdfb987b785a55f87e287df https://github.com/ddnexus/pagy/pull/908 https://github.com/ddnexus/pagy/releases/tag/43.5.6 https://github.com/ddnexus/pagy/security/advisories/GHSA-2xmw-f8j8-wfxc

Frequently Asked Questions

What is CVE-2026-54659? +

Pagy is agnostic pagination in plain Ruby. From 43.0.0 until 43.5.6, Pagy::I18n.locale= in gem/lib/pagy/modules/i18n/i18n.rb stored locale values verbatim and later used them as <locale>.yml path components, allowing untrusted params[:locale] values with absolute paths or ../ sequences to create a file existence and readability oracle for YAML files. This issue is fixed in version 43.5.6.

How do I check if I'm vulnerable to CVE-2026-54659? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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