medium5.3
CVE-2026-103276
Ghost versions before 6.20.0 contain a file extension filtering bypass vulnerability that allows unauthenticated attackers to read theme templates and metadata.
Impact
Ghost versions before 6.20.0 contain a file extension filtering bypass vulnerability that allows unauthenticated attackers to read theme templates and metadata. Attackers can use URL encoding to bypass extension validation and access sensitive theme files.
Affected products
| Product | Affected versions |
|---|---|
| Ghost | before 6.20.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.