Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck

CVE-2026-103292Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head

High 8.0

In plain English

A high-severity cross-site scripting in Ghost from TryGhost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)8.0High

Exploit odds (30 days)0.2%top 85.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
TryGhost	Ghost	0.5.3 – before 6.50.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-mp9q-4q6m-44f5) vendor-advisory
VulnCheck Advisory: Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head third-party-advisory