CVE-2018-20239

moderate-risk

Published 2019-04-30

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.

Do I need to act?

0.53% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.4/10 Medium

NETWORK / LOW complexity

Affected Products (8)

Application Links

Confluence Data Center

Confluence Server

Crowd

Crucible

Fisheye

Jira Data Center

Jira Server

Affected Vendors

Atlassian

References (12)

Issue Tracking https://ecosystem.atlassian.net/browse/APL-1373

Issue Tracking https://jira.atlassian.com/browse/CONFSERVER-58208

Issue Tracking https://jira.atlassian.com/browse/CRUC-8379

Issue Tracking https://jira.atlassian.com/browse/CWD-5362

Issue Tracking https://jira.atlassian.com/browse/FE-7161

Issue Tracking https://jira.atlassian.com/browse/JRASERVER-68855

Issue Tracking https://ecosystem.atlassian.net/browse/APL-1373

Issue Tracking https://jira.atlassian.com/browse/CONFSERVER-58208

Issue Tracking https://jira.atlassian.com/browse/CRUC-8379

Issue Tracking https://jira.atlassian.com/browse/CWD-5362

Issue Tracking https://jira.atlassian.com/browse/FE-7161

Issue Tracking https://jira.atlassian.com/browse/JRASERVER-68855

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moderate-risk

Severity 21/34 · High

Exploitability 2/34 · Minimal

Exposure 14/34 · Moderate