CVE-2026-103290: Ghost 6.14.0 before 6.27.0 Path Traversal via ImageSize

Severity: low (CVSS 3.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-01 · updated 2026-10-01
Weakness: CWE-35

Description

Ghost versions 6.14.0 through versions prior to 6.27.0 contain a path traversal vulnerability in the ImageSize service. Insufficient input validation of user-supplied file paths may allow authenticated staff users to access local files outside the intended data storage directories on the server.

Affected products

TryGhost Ghost: from 6.14.0 before 6.27.0 — fixed in 6.27.0

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.27.0. Check the vendor advisory for mitigations.

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-83rp-q473-j88c
https://www.vulncheck.com/advisories/ghost-6.14.0-before-6.27.0-path-traversal-via-imagesize

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