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VULNERABILITIES

CVE-2026-103276 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.
CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/TryGhost/Ghost/security/advisories/GHSA-6v8p-3jx9-8chr [email protected]
https://www.vulncheck.com/advisories/ghost-before-6.20.0-file-read-via-url-encoding-bypass [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-173Improper Handling of Alternate Encoding[email protected]

Affected Products

This vulnerability is currently being analyzed

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-103276
NVD Published Date:
Oct 1, 2026
NVD Last Modified:
Oct 1, 2026
Source:
[email protected]
CVE-2026-103276 Details - Not Deferred