EUVD-2026-52928
GHSA-2gx6-7gx2-wwcf
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L
XSS requires a victim to render affected content (UI:R) and crosses the admin-to-browser security boundary (S:C); admin credentials are mandatory (PR:H); no availability impact applies.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
3DescriptionCVE.org
Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.
AnalysisAI
Cross-site scripting in Ghost CMS (versions 5.26.0 through 6.54.0) allows a high-privileged administrator to plant arbitrary JavaScript via the Universal Import feature, which fails to sanitize the feature_image_caption field and link card URLs before storing and rendering them. The fix in v6.54.1 introduces DOMPurify sanitization across both the Ember-based admin post history modal and the Node.js frontend rendering pipeline, alongside a strict URL protocol allowlist in the JSON-to-HTML importer. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires Ghost administrator-level credentials (CVSS PR:H) and access to the Universal Import feature within Ghost Admin, which is enabled by default in the admin UI. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L, score 5.0) reflects a moderate-severity finding requiring administrator privileges and high attack complexity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Ghost to v6.54.1 or later - this is the vendor-released patch confirmed by GHSA-2gx6-7gx2-wwcf and the GitHub release tag. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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