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Fencer Vulns
medium 4.0

CVE-2026-105648 json

Ghost: Private IP Filtering Bypass via IPv6 Transition Addresses

published 2026-10-05 34 d ago modified 2026-10-13 27 d ago also BIT-ghost-2026-105648 , EUVD-2026-92755 , GHSA-r7f2-6fj8-6fg2

cvss
4.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

Ghost is a Node.js content management system. From 6.0.9 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network on some network configurations. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.

Patch / fix

  • npm ghost 6.65.0
  • bitnami ghost 6.65.0
  • ghost ghost 6.65.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
34 d ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
GitHub 3.1 4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
OSV 3.1 4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
npm ghost
>=6.0.9, <6.65.0
6.65.0
bitnami ghost
>=6.0.9, <6.65.0
6.65.0

Affected products

  • TryGhost Ghost

Classification

Weakness
  • CWE-184 Incomplete List of Disallowed Inputs
  • CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns 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.