CVE-2026-103281: Ghost 3.23.0 before 6.23.0 API Key Exposure via Admin API

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% 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-201

Description

Ghost (npm package 'ghost') versions from 3.23.0 up to, but not including, 6.23.0 expose API keys to users with low-privilege staff accounts. An authenticated low-privilege staff user can read API keys returned by the Admin API, which are intended to be available only to higher-privileged users.

Affected products

TryGhost Ghost: from 3.23.0 before 6.23.0 — fixed in 6.23.0

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.23.0. Check the vendor advisory for mitigations.

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-q98w-jm4q-wch7
https://www.vulncheck.com/advisories/ghost-3.23.0-before-6.23.0-api-key-exposure-via-admin-api

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