All vulnerabilities
CVE-2026-103277GHSA-8vhf-xxpj-4qrg

Ghost 2.5.0 before 6.34.0 Untrusted Script Execution via oEmbed

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Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.27%Chance of exploitation activity in the next 30 days, higher than 18% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.34.0Fixed 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 2.5.0 before 6.34.0 contain an untrusted script execution vulnerability in the oEmbed preview feature that fails to sandbox externally hosted scripts. Attackers can craft malicious oEmbed content to execute scripts in the context of a staff user's admin session, potentially compromising administrative access.

Text from CVE List

Affected versions 2

  • Ghostaffected: 2.5.0 before 6.34.0CVE List
  • Ghostunaffected: 6.34.0CVE List

References 2