CVE-2019-20100

Name: CVE-2019-20100
Creator: NVD / NIST
Published: 2020-02-12T14:15:11.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.7/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2019-20100 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. 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. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.7/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

EPSS Probability

1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Atlassian	Jira	>= 7.0.0, < 8.4.5
Atlassian	Jira Data Center	>= 7.0.0, < 8.5.4
Atlassian	Jira Data Center	>= 8.5.5, < 8.6.2
Atlassian	Jira Server	>= 8.5.5, < 8.6.2

References

https://ecosystem.atlassian.net/browse/APL-1390Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70607Issue Tracking, Vendor Advisory
https://www.tenable.com/security/research/tra-2020-06Exploit, Third Party Advisory
https://ecosystem.atlassian.net/browse/APL-1390Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70607Issue Tracking, Vendor Advisory
https://www.tenable.com/security/research/tra-2020-06Exploit, Third Party Advisory

Timeline

Published: Feb 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20100?

How severe is CVE-2019-20100?

CVE-2019-20100 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20100?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20100?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST