Is CVE-2019-20100 actively exploited?

No active exploitation of CVE-2019-20100 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-20100 be exploited remotely?

Yes. CVE-2019-20100 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-20100?

CVE-2019-20100 has a CVSS score of 4.7 (MEDIUM).

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MEDIUM

CVE-2019-20100

CWE-352Published: February 12, 2020· Updated: Jun 17, 2026

4.7

CVSS v3.1

Official Description

The Atlassian Application Links plugin is vulnerable to cross-site request forgery (CSRF). The following versions are affected: all versions prior to 5.4.21, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.2, and from version 7.1.0 before version 7.1.3. The vulnerable plugin is used by Atlassian Jira Server and Data Center before version 8.7.0. An attacker could exploit this by tricking an administrative user into making malicious HTTP requests, allowing the attacker to enumerate hosts and open ports on the internal network where Jira server is present.

NVD Source

Technical Analysis

CVE-2019-20100 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.