Ghost: Staff enumeration via observable discrepancies in Content API
Summary
Ghost versions from 2.10.0 before 6.63.0 contain a staff enumeration flaw in the Content API. An unauthenticated attacker can observe differences in API metadata responses to identify staff members and extract user data. The Content API is publicly reachable on Ghost sites by design, so any internet-facing installation in the affected range is exposed. The realistic harm is disclosure of staff identities and related data, which can support targeted phishing; the CNA vector shows no integrity or availability impact.
Affected
- Ghost from 2.10.0 up to, but not including, 6.63.0
- Self-hosted Docker and Ghost-CLI installations in this range
Fixed in
- Ghost 6.63.0 or later
Workaround
Unknown.
Exploitation
- CISA SSVC: exploitation none, automatable yes, technical impact partial.
- No public proof of concept found and no evidence of exploitation in the wild in the sources reviewed.
- EPSS 0.00365 (low predicted exploitation probability).
Our recommendation
- Identify all Ghost instances in client environments, including self-hosted and Docker-based installations.
- Update affected instances to Ghost 6.63.0 or later in the next maintenance window, or sooner if staff profiles are publicly visible.
- If an update is delayed, limit access to admin and staff-facing surfaces and monitor for unusual Content API request patterns.
- Verify the installed version after the update.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- GitHub Security Advisory GHSA-ffmj-3ppp-cj4r github.com
- VulnCheck advisory: Ghost Staff Enumeration via Content API www.vulncheck.com
- OSV: BIT-ghost-2026-103272 osv.dev
- Vulners VulnCheck record CVE-2026-103272 vulners.com
- OpenCVE CVE-2026-103272 app.opencve.io
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 06:21.
Original description (NVD)
Ghost versions from 2.10.0 before 6.63.0 contain a staff enumeration vulnerability in the content API that allows unauthenticated attackers to leak user data. Attackers can observe discrepancies in API metadata responses to enumerate staff members and extract sensitive information without authentication.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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