Code Injection in Confluence Server - CVE-2020-4027
Published: March 16, 2021
Vulnerability identifier: #VU51512
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-4027
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Atlassian
Affected software:
Confluence Server
Confluence Server
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote user can bypass velocity template injection mitigations via an injection vulnerability in custom user macros and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-4027
Install updates from vendor's website.