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CVE-2026-105648

MEDIUM 4

Published 2026-10-05 · Last modified 2026-10-06

Ghost is a Node.js content management system. From 6.0.9 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network on some network configurations. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 22nd percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

4CVSS 3.1 · MEDIUM

  • ConfidentialityLow
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Tryghost

Products Ghost

Weakness (CWE)

  • CWE-184: : Incomplete List of Disallowed Inputs
  • CWE-918: : Server-Side Request Forgery (SSRF)

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • ghost npm

    pkg:npm/ghost

    SEMVER range
    • Introduced version (included): 6.0.9
    • Fixed boundary (excluded): 6.65.0
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-r7f2-6fj8-6fg2/GHSA-r7f2-6fj8-6fg2.json"
  }
}
    GitHub Advisory Database · GHSA-r7f2-6fj8-6fg2 · Updated 2026-10-13T08:26:02.605700718Z

All CVSS metrics

  • MEDIUM 4 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
  • MEDIUM 4 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS