CVE Vulnerabilities

CVE-2020-4027

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Published: Jul 01, 2020 | Modified: Dec 13, 2021
CVSS 3.x
4.7
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS 2.x
6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass velocity template injection mitigations via an injection vulnerability in custom user macros. The affected versions are before version 7.4.5, and from version 7.5.0 before 7.5.1.

Weakness

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Software

Name Vendor Start Version End Version
Confluence Atlassian * 7.4.5 (excluding)
Confluence_server Atlassian 7.5.0 (including) 7.5.1 (excluding)

Potential Mitigations

References