Medium
Ghost before 6.20.0 File Read via URL Encoding Bypass
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.
Announced Group revision 1
Original source ↗CVE-2026-103276
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103276
Ghost
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "TryGhost",
"product": "Ghost",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "6.20.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.20.0",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/ghost",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103276
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #5185 · Revision 1
- Added to Heist Feed
- Publisher date