Vulnerability · Published Oct 5, 2026 · Assigned by GitHub_M
CVE-2026-105645Ghost: Regular Expression Denial of Service in External Media Inliner
Medium 4.9
In plain English
A medium-severity regular-expression denial of service 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 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.9Medium
Exploit odds (30 days)0.3%top 71.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Ghost is a Node.js content management system. From 5.37.0 until 6.67.0, a crafted request to the external media inliner 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | ghost | 6.67.0 | GHSA-9m4w-fmjw-fvjq |
Affected products (as reported)
Weakness: CWE-1333 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-9m4w-fmjw-fvjq x_refsource_CONFIRM
- https://github.com/TryGhost/Ghost/issues/31058 x_refsource_MISC
- https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce x_refsource_MISC
- https://github.com/TryGhost/Ghost/releases/tag/v6.66.0 x_refsource_MISC