Arbitrary File Upload in Ghost v4.39.0 Affects Security of File Module
CVE-2022-27139

9.8CRITICAL

Key Information:

Vendor

Ghost

Status
Ghost
Vendor
CVE Published:
12 April 2022

What is CVE-2022-27139?

An arbitrary file upload vulnerability exists in Ghost v4.39.0, specifically within the file upload module. This flaw allows authenticated users to upload crafted SVG files, which could potentially lead to code execution under certain conditions. It's important to note that while uploading SVGs is restricted to trusted users, the capability still poses risks, as SVGs can execute JavaScript in a client's browser. This behavior, while expected, necessitates careful management of user privileges to mitigate potential exploitation.

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References

https://youtu.be/FCqWEvir2wE
x_refsource_MISC
http://ghost.org/docs/security/#privilege-escalation-attacks
x_refsource_MISC

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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