CVE-2026-70591Network attack vectorHinoki check available

Internal network probing via unprotected image fetch

Published Aug 4, 2026 · Updated Aug 4, 2026

SSRF in Ghost 0.10.0 through 6.54.0 allows remote authenticated users to make blind HTTP GET requests to internal hosts. The image-size fetch path downloaded full images with a generic request client instead of Ghost's externalRequest client, bypassing its SSRF protections. Any staff-level account can supply the image URL; responses are not returned, limiting the demonstrated impact to internal-host and open-port probing.

CVSS severity4.1
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in Ghost 0.10.0 through 6.54.0 allows remote authenticated users to make blind HTTP GET requests to internal hosts. The image-size fetch path downloaded full images with a generic request client instead of Ghost's externalRequest client, bypassing its SSRF protections. Any staff-level account can supply the image URL; responses are not returned, limiting the demonstrated impact to internal-host and open-port probing.

The record

CVE
CVE-2026-70591
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
Ghost Foundation
Product
Ghost
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.10.0, < 6.54.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ghost Foundation · Ghostversion=>= 0.10.0, < 6.54.1

Published CVSS scores

4.1GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Scanning

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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