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CVE-2026-53945

MEDIUM
4.0
CVSS 3.1
Description
Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. This vulnerability is fixed in 6.21.1.

Metadata

CVE ID
CVE-2026-53945
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-11 15:50 UTC
Published
2026-06-24 18:09 UTC
Last updated
2026-06-25 15:38 UTC
Primary CWE
CWE-367
CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Vendor / Product
TryGhost / Ghost
Sources
cve.org  ·  NVD

Severity & Metrics

4.0 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
TryGhost Ghost — >= 6.0.9, < 6.21.1
Weakness (CWE)
CWESourceDescription
CWE-367 cna CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-918 cna CWE-918: Server-Side Request Forgery (SSRF)
CVSS scores (1)
ScoreSeverityVersionSourceVector
4.0 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
References (1)
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