What’s Vulnerable › Vulnerabilities

CVE-2026-70596: Ghost: Cross-Site Scripting in Feature Image Captions

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-10-24
• Weakness: CWE-79

Description

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.

Affected products

• TryGhost Ghost: from 4.9.0, < 6.54.1

References

• https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e
• https://github.com/TryGhost/Ghost/pull/29635
• https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
• https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv

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