CVE-2026-105651: tryghost ghost Cross-site Scripting
Vulnerability summary
CVE-2026-105651 is a high (CVSS 7.3) Cross-site Scripting vulnerability in tryghost ghost. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.5% of scored vulnerabilities.
Timeline
- 05-10-2026PublishedVulnerability first disclosed.
- 07-10-2026Last modifiedVulnerability information updated.
Description
Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, when creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions. This issue is fixed in version 6.64.0.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
- CWE-434Unrestricted Upload of File with Dangerous TypeThe product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
Affected systems
Tryghost1 product
- ghost≥ 5.94.0, < 6.64.0
1 vendor · 1 product
References
4 links- github.com/TryGhost/Ghost/security/advisories/GHSA-347q-26qq-h2p6X Refsource CONFIRM
- github.com/TryGhost/Ghost/issues/30761X Refsource MISC
- github.com/TryGhost/Ghost/releases/tag/v6.64.0X Refsource MISC