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CVE-2026-539475.3MediumCWE-204

CVE-2026-53947: Ghost: Member existence leak via magic link sign-in response

TryGhost · Ghost

Affected: TryGhost Ghost · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.3%probability of exploitation in the next 30 days
28th percentile
050100

Higher than 28% of scored CVEs

5.3MediumCVSS 3.1
LowMedium

DescriptionCVE.org

Ghost is a Node.js content management system. From 5.18.0 until 6.21.1, a discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. This vulnerability is fixed in 6.21.1.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

  • TryGhost · Ghost>= 5.18.0, < 6.21.1

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas
Exploitation
Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV
Not listed
Public check
No public nuclei template
Vendor
TryGhost
Published
June 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-53947 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References