ddnexus pagy up to 43.5.5 I18n i18n.rb locale path traversal

Summaryinfo

A vulnerability, which was classified as problematic, was found in ddnexus pagy up to 43.5.5. This issue affects some unknown processing of the file gem/lib/pagy/modules/i18n/i18n.rb of the component I18n. The manipulation of the argument locale results in path traversal. This vulnerability is identified as CVE-2026-54659. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in ddnexus pagy up to 43.5.5. It has been classified as problematic. Affected is some unknown functionality of the file gem/lib/pagy/modules/i18n/i18n.rb of the component I18n. The manipulation of the argument locale with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-54659 since 06/15/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 43.5.6 eliminates this vulnerability.

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Productinfo

Vendor

• ddnexus

Name

• pagy

Version

• 43.5.0
• 43.5.1
• 43.5.2
• 43.5.3
• 43.5.4
• 43.5.5

Website

• Product: https://github.com/ddnexus/pagy/

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