CVE-2026-104417: Ghost 1.20.0 before 6.64.0 Path Traversal via Locale Setting

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-02 · updated 2026-10-02
Weakness: CWE-22

Description

Ghost from 1.20.0 before 6.64.0 contains a path traversal vulnerability in theme translation file loading that allows authenticated administrators to read JSON files outside the active theme directory. Attackers can manipulate the locale setting to load JSON files elsewhere on the server, exposing server configuration secrets.

Affected products

TryGhost Ghost: from 1.20.0 before 6.64.0 — fixed in 6.64.0

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.64.0. Check the vendor advisory for mitigations.

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-m382-6jw4-fmp6
https://www.vulncheck.com/advisories/ghost-1.20.0-before-6.64.0-path-traversal-via-locale-setting

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