All vulnerabilities
CVE-2026-103291GHSA-rrq6-9r3c-7w26

Ghost 3.20.2 before 6.51.0 SSRF via image-size fetch

TryGhost GhostApplications & CMS
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.51.0Fixed versionCVE List
Published1 Oct 2026Updated 6 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 3.20.2 before 6.51.0 contain a server-side request forgery vulnerability in image dimension refetching that allows authenticated staff users to trigger outbound HTTP requests to arbitrary URLs. Attackers can point image cards at attacker-controlled hosts or internal network endpoints to access metadata services and internal resources unavailable from the public internet.

Text from CVE List

Affected versions 2

  • Ghostaffected: 3.20.2 before 6.51.0CVE List
  • Ghostunaffected: 6.51.0CVE List

References 2