CVE-2022-27139

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-04-12 · updated 2026-06-17
Weakness: CWE-434

Description

An arbitrary file upload vulnerability in the file upload module of Ghost v4.39.0 allows attackers to execute arbitrary code via a crafted SVG file. NOTE: Vendor states that as outlined in Ghost's security documentation, upload of SVGs is only possible by trusted authenticated users. The uploading of SVG files to Ghost does not represent a remote code execution vulnerability. SVGs are not executable on the server, and may only execute javascript in a client's browser - this is expected and intentional functionality

Affected products

TryGhost Ghost: 4.39.0

References

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

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