Pagy I18n locale option is not validated before being used in a file path
Priority LOW 37CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00369 30th percentileScored 2026-11-07
Fix Fixed pagy (ddnexus): 43.5.6pagy (RubyGems): 43.5.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ddnexus | pagy | 43.0.0 to before 43.5.6 | 43.5.6 | Patch available | CNA |
| — | pagy (RubyGems) | 43.0.0 to before 43.5.6 | 43.5.6 | Patch available | GHSA-2xmw-f8j8-wfxc |
- pagy Vendorddnexus Affected 43.0.0 to before 43.5.6 Fixed in 43.5.6 Patch available CNA
- pagy (RubyGems) Vendor— Affected 43.0.0 to before 43.5.6 Fixed in 43.5.6 Patch available GHSA-2xmw-f8j8-wfxc
Remediation
- Fix · CNA pagy (ddnexus) Fixed in 43.5.6
- Fix · GHSA-2xmw-f8j8-wfxc pagy (RubyGems) Fixed in 43.5.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54659
- 2026-10-03 Alias added: GHSA-2xmw-f8j8-wfxc
References
Sources
- CVE-2026-54659 · CVE Program
- CVE-2026-54659 · NVD
- FIRST EPSS
- GHSA-2xmw-f8j8-wfxc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences