medium6.9
CVE-2026-54659
Pagy I18n locale option is not validated before being used in a file path
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rubygems | pagy | >= 43.0.0, < 43.5.6 | 43.5.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-2xmw-f8j8-wfxc
- https://github.com/ddnexus/pagy/security/advisories/GHSA-2xmw-f8j8-wfxc
- https://github.com/ddnexus/pagy/pull/908
- https://github.com/ddnexus/pagy/commit/efcf09690e9fa7d7abdfb987b785a55f87e287df
- https://github.com/ddnexus/pagy/releases/tag/43.5.6