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CVE-2026-54659— Pagy I18n locale option is not validated before being used in a file path

Quick assessment

Affected
ddnexus pagy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Domizio Demichelis Pagy是Domizio Demichelis个人开发者的一款分页组件。 Domizio Demichelis Pagy 43.0.0版本至43.5.6之前版本存在安全漏洞，该漏洞源于Pagy::I18n.locale=方法将locale值原样存储并用作<locale>.yml路径组件，允许不受信任的params[:locale]值包含绝对路径或../序列，进而导致路径遍历和信息泄露。

CVSS 6.9 · Medium EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys

Affected Version Matrix 1

VendorProduct Version RangeStatus
ddnexus pagy >= 43.0.0, < 43.5.6 affected
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I. Basic Information for CVE-2026-54659

Vulnerability Information
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Vulnerability Title
Pagy I18n locale option is not validated before being used in a file path
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Domizio Demichelis Pagy 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Domizio Demichelis Pagy是Domizio Demichelis个人开发者的一款分页组件。 Domizio Demichelis Pagy 43.0.0版本至43.5.6之前版本存在安全漏洞，该漏洞源于Pagy::I18n.locale=方法将locale值原样存储并用作<locale>.yml路径组件，允许不受信任的params[:locale]值包含绝对路径或../序列，进而导致路径遍历和信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ddnexus pagy >= 43.0.0, < 43.5.6 -

II. Public POCs for CVE-2026-54659

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III. Intelligence Information for CVE-2026-54659

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Patches & Fixes for CVE-2026-54659 (2)

Vendor Advisories for CVE-2026-54659 (1)

Other References for CVE-2026-54659 (1)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-54659

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