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Not in CISA KEV
HIGH severity

CVE-2020-8134 — ghost

HIGH

CVE-2020-8134 is a high-severity (CVSS 8.1) Server-Side Request Forgery (SSRF) vulnerability in ghost. 1 public exploit reference exists, so weaponization risk is real. A fix is available for ghost — see the affected versions and patch details below.

Server-side request forgery in Ghost CMS

Also known asBIT-ghost-2020-8134GHSA-q4h8-7qff-gh6c
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs68th percentile — riskier than 68% of all scored CVEsHighest risk
0.00%0.57%1.15%1.72%0.3%1.2%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2020-8134 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

7other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
ghostnpm
19Kdownloads / week

Description

Server-side request forgery (SSRF) vulnerability in Ghost CMS < 3.10.0 allows an attacker to scan local or external network or otherwise interact with internal systems.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmghostall versions3.10.0npm install ghost@3.10.0

Affected Products

1 product · 1 configurations
Application
ghostghost
< 3.10.0
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Server-side request forgery (SSRF) vulnerability in Ghost CMS < 3.10.0 a…

hackerone.comNVDMar 2020

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ghost, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update ghost to 3.10.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-8134 is resolved across your whole dependency graph.

  3. Workarounds

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

Server-side request forgery (SSRF) vulnerability in Ghost CMS < 3.10.0 allows an attacker to scan local or external network or otherwise interact with internal systems.
O3 Security · Impact-Aware SCA

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CVE-2020-8134: ghost SSRF — Fixed in 3.10.0