Medium severity · published Aug 4, 2026
CVE-2026-70593
Ghost: Theme Upload Path Traversal
6.6
CVSS
0.4%
EPSS
No
On KEV
Description
Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 6.54.1.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
>= 0.10.0, < 6.54.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-70593
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-70593
github.com
https://github.com/TryGhost/Ghost/commit/fbaa92327e52607036a1e42204c9eadcc751d82c
github.com
https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
github.com
https://github.com/TryGhost/Ghost/security/advisories/GHSA-cjc9-q5gf-327p
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