Vulnerability Details : CVE-2020-4027
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.
Products affected by CVE-2020-4027
- cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*
- cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-4027
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-4027
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
1.2
|
3.4
|
NIST |
CWE ids for CVE-2020-4027
-
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.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-4027
-
https://jira.atlassian.com/browse/CONFSERVER-59898
[CONFSERVER-59898] Velocity Template Injection in Custom user macros - Macros Platform - CVE-2020-4027 - Create and track feature requests for Atlassian products.Issue Tracking;Patch;Release Notes;Vendor Advisory
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