CVE-2020-8134Public exploitNetwork attack vector

Internal network access via unsanitized oEmbed URLs

Published Mar 20, 2020 · Updated Aug 4, 2024

SSRF in Ghost before 3.10.0 allows remote authenticated users to make server-side requests to internal and external systems. The oEmbed endpoint passes URLs extracted by getOembedUrlFromHTML to its fetch path without adequately validating untrusted destinations. A low-privileged account is required; successful use can scan internal ports or read oEmbed content from services reachable by the host.

CVSS severity8.1
High
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Ghost before 3.10.0 allows remote authenticated users to make server-side requests to internal and external systems. The oEmbed endpoint passes URLs extracted by getOembedUrlFromHTML to its fetch path without adequately validating untrusted destinations. A low-privileged account is required; successful use can scan internal ports or read oEmbed content from services reachable by the host.

The record

CVE
CVE-2020-8134
Published
Mar 20, 2020
Updated
Aug 4, 2024
Vendor
Ghost Foundation
Product
Ghost
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=Fixed Version: 3.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ghost Foundation · Ghostversion=Fixed Version: 3.10.0

Published CVSS scores

5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

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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