CVE-2026-53944

MEDIUM

CVSS v3.1: 5.8 · EPSS: 0.0020 (9.6 percentile)

NetworkNo privilegesNo user interactionSSRFVendor advisory ref

Source data as of:

At a glance

Severity
MEDIUM
CVSS
5.8 v3.1 · NVD
EPSS
0.0020 (9.6 percentile) · FIRST.org
CISA KEV
No
Type
SSRF · NVD CWE
Attack conditions (CVSS vector)
NetworkNo privilegesNo user interaction · Source: NVD Vector
Published
2026-06-24 · Modified: 2026-06-25
References
Jump to references (1)

CVSS / EPSS / KEV

CVSS v3.1 5.8 / 10 MEDIUM Source: NVD
EPSS 0.0020 9.6 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, when making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. This vulnerability is fixed in 6.21.1.

Record details

CVE ID
CVE-2026-53944
CVSS (v3.1)
5.8 (MEDIUM)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Exploitability subscore
3.9
Impact subscore
1.4
EPSS
0.0020 (9.6 percentile) — 2026-06-26
CISA KEV
No
Weakness (CWE)
CWE-184, CWE-918
Affected configurations (CPE)
0
Published
2026-06-24
Modified
2026-06-25
Status
Deferred

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-54090 HIGH CVSS 8.7 CVE-2026-47389 HIGH CVSS 8.6 CVE-2026-54512 HIGH CVSS 8.1 CVE-2026-54513 HIGH CVSS 8.1

Published the same year

CVE-2026-12485 CRITICAL CVSS 10.0 CVE-2026-12537 CRITICAL CVSS 10.0 CVE-2026-12846 CRITICAL CVSS 10.0 CVE-2026-12847 CRITICAL CVSS 10.0
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