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Fencer Intel
medium 6.6

CVE-2026-70593 json

Ghost: Theme Upload Path Traversal

published 3mo ago modified 18d ago also BIT-ghost-2026-70593 , EUVD-2026-52977 , GHSA-cjc9-q5gf-327p

cvss
6.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm ghost 6.54.1
  • bitnami ghost 6.54.1
  • ghost ghost 6.54.1

Is CVE-2026-70593 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L
GitHub 3.1 6.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L
OSV 3.1 6.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L

Affected packages

ecosystem package affected fixed in
npm ghost
>=0.10.0, <6.54.1
6.54.1
bitnami ghost
>=0.10.0, <6.54.1
6.54.1

Affected products

  • TryGhost Ghost

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.