CVE-2026-105646 · GHSA-fwh9-qg68-vxp4
Ghost: Regular Expression Denial of Service in Content Import
- Risk score
- 40/100
- CVSS
- 4.9 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 5 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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
- ghost (npm) >= 4.0.0, < 6.67.0
- Fix
- Upgrade ghost to 6.67.0 or later.
- Exploitation
- No known exploitation
Story map
At a glance
ghost: Amber, patch this week. Ghost is a Node.js content management system. From 6.56.0 until 6.67.0, an image processing library bundled with Ghost contained a vulnerability in its SVG handling. Any staff user, including Contributors, could create a bookmark card for an attacker-controlled website, resulting in arbitrary commands being run on the…
The flaws
- CVE-2026-105646: Ghost: Regular Expression Denial of Service in Content Import (CVSS 4.9 · EPSS 0%)
- CVE-2026-105642: Ghost: Remote Code Execution via Bookmark Card Images (CVSS 8.8 · EPSS 0%)
- CVE-2026-105650: Ghost: Stored XSS via oEmbed Photo Responses (CVSS 8.1 · EPSS 0%)
- CVE-2026-105677: Ghost: Remote Code Execution via Theme Translation Files (CVSS 7.2 · EPSS 1%)
The fix
Upgrade ghost: 6.67.0 · 6.64.0 or later on your release line
Who is exposed: ghost (npm) >= 6.56.0, < 6.67.0
Where it stands
- No known exploitation
Connects to
- Same weakness: CWE-1333 (CWE-1333). 46 other warnings in 30 days
Why it is Yellow
- CVSS 4.9 medium
- On your watchlist: npm
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| ghost | npm | >= 4.0.0, < 6.67.0 | 6.67.0 |
References
- https://github.com/advisories/GHSA-fwh9-qg68-vxp4
- https://github.com/TryGhost/Ghost/security/advisories/GHSA-fwh9-qg68-vxp4
- https://nvd.nist.gov/vuln/detail/CVE-2026-105646
- https://github.com/TryGhost/Ghost/pull/31058
- https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce
- https://github.com/TryGhost/Ghost/releases/tag/v6.66.0
- https://github.com/advisories/GHSA-fwh9-qg68-vxp4
Original 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.
Last activity 5 Oct 2026. Patch Forecast updates every hour.