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.
CVE-2026-105646
MEDIUMPre-NVD 4.94.9—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 4.9 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3% (23rd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cna:github_m, epss
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.9Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 4.9
- EG Score
- 4.9MEDIUMmedium confidence
- EG Risk
- 22EG Risk 22/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity49% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.3%
- EPSS %ILE
- 23rd
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 5, 2026
Last Modified
October 7, 2026
Advisory Details (4)
Auto-updated Oct 5, 2026Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
v6.66.0
Patch available: TryGhost/Ghost v6.66.0
https://github.com/TryGhost/Ghost/releases/tag/v6.66.0github_commit Patch Available
commit 88ae6d6d56f8 (TryGhost/Ghost)
Patch available: TryGhost/Ghost v6.67.0 (contains commit 88ae6d6d56f8)
https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2cegithub_pr Patch Available
Improved handling of import regexes
Patch available: TryGhost/Ghost v6.67.0 (PR #31058 merged 2026-09-28)
https://github.com/TryGhost/Ghost/pull/31058githubMentions a patch (unverified)
Regular Expression Denial of Service in Content Import · Advisory · TryGhost/Ghost · GitHub
https://github.com/TryGhost/Ghost/security/advisories/GHSA-fwh9-qg68-vxp4Vendor Advisories for CVE-2026-105646(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-07 21:47 UTCEG score recompute
- 2026-10-06 15:23 UTCEG score recompute
- 2026-10-06 15:17 UTCEPSS rescore
- 2026-10-05 19:24 UTCEG score recompute
- 2026-10-05 19:01 UTCEG score recompute
- 2026-10-05 19:00 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-105646?
CVE-2026-105646 is a medium vulnerability published on October 5, 2026. 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.
When was CVE-2026-105646 disclosed?
CVE-2026-105646 was first published on October 5, 2026, with the most recent update on October 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-105646 actively exploited?
CVE-2026-105646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-105646?
CVE-2026-105646 has a CVSS base score of 4.9 (the CNA's own assessment, by github_m; NVD's own analysis pending).
How do I remediate CVE-2026-105646?
A fix for CVE-2026-105646 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-105646 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-105646
Is Your Infrastructure Affected by CVE-2026-105646?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.