CVE-2018-20239

Description

Application Links before version 5.0.11, from version 5.1.0 before 5.2.10, from version 5.3.0 before 5.3.6, from version 5.4.0 before 5.4.12, and from version 6.0.0 before 6.0.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the applinkStartingUrl parameter. The product is used as a plugin in various Atlassian products where the following are affected: Confluence before version 6.15.2, Crucible before version 4.7.0, Crowd before version 3.4.3, Fisheye before version 4.7.0, Jira before version 7.13.3 and 8.x before 8.1.0.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Vendor Advisory atlassian.net Vendor Advisory atlassian.com Vendor Advisory atlassian.com Vendor Advisory atlassian.com Vendor Advisory atlassian.com Vendor Advisory atlassian.com
Affected: Atlassian Atlassian Application Links
Published at:
Updated at:

References

Link Tags
https://ecosystem.atlassian.net/browse/APL-1373 issue tracking vendor advisory
https://jira.atlassian.com/browse/CRUC-8379 issue tracking vendor advisory
https://jira.atlassian.com/browse/FE-7161 issue tracking vendor advisory
https://jira.atlassian.com/browse/CONFSERVER-58208 issue tracking vendor advisory
https://jira.atlassian.com/browse/CWD-5362 issue tracking vendor advisory
https://jira.atlassian.com/browse/JRASERVER-68855 issue tracking vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20239?
CVE-2018-20239 has been scored as a medium severity vulnerability.
How to fix CVE-2018-20239?
To fix CVE-2018-20239, 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-2018-20239 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-20239 is being actively exploited. 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-2018-20239?
CVE-2018-20239 affects Atlassian Atlassian Application Links.
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