CVE-2019-20100

Public Exploit

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.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Vendor Advisory atlassian.net Vendor Advisory atlassian.com
Affected: Atlassian Application Links
Affected: Atlassian Jira Server
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/research/tra-2020-06 third party advisory exploit
https://ecosystem.atlassian.net/browse/APL-1390 vendor advisory
https://jira.atlassian.com/browse/JRASERVER-70607 issue tracking vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-20100?
CVE-2019-20100 has been scored as a medium severity vulnerability.
How to fix CVE-2019-20100?
To fix CVE-2019-20100, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20100 being actively exploited in the wild?
It is possible that CVE-2019-20100 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-20100?
CVE-2019-20100 affects Atlassian Application Links, Atlassian Jira Server.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.