All vulnerabilities
CVE-2026-103292GHSA-mp9q-4q6m-44f5

Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head

TryGhost GhostApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.23%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.50.0Fixed versionCVE List
Published1 Oct 2026Updated 1 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Ghost versions from 0.5.3 through versions prior to 6.50.0 fail to sanitize the data placed in the JSON-LD HTML tag emitted by the {{ghost_head}} helper. An authenticated user with limited privileges can inject unescaped content that is rendered as script in the published page, potentially leading to compromise of a staff user's admin session when that user views the affected page.

Text from CVE List

Affected versions 2

  • Ghostaffected: 0.5.3 before 6.50.0CVE List
  • Ghostunaffected: 6.50.0CVE List

References 2