What’s Vulnerable › Vulnerabilities

CVE-2026-105646: Ghost: Regular Expression Denial of Service in Content Import

• Severity: medium (CVSS 4.9 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: 2026-10-05 · updated 2026-10-07
• Weakness: CWE-1333

Description

Ghost is a Node.js content management system. From 4.0.0 until 6.67.0, a crafted content import file could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access. This issue is fixed in version 6.67.0.

Affected products

• TryGhost Ghost: from 4.0.0, < 6.67.0

References

• https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce
• https://github.com/TryGhost/Ghost/pull/31058
• https://github.com/TryGhost/Ghost/releases/tag/v6.66.0
• https://github.com/TryGhost/Ghost/security/advisories/GHSA-fwh9-qg68-vxp4

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