CVE-2018-13387

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-16 · updated 2026-06-17
Weakness: CWE-79

Description

The IncomingMailServers resource in Atlassian JIRA Server before version 7.6.7, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3 and from version 7.10.0 before version 7.10.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the messagesThreshold parameter as the fix for CVE-2017-18039 was incomplete.

Affected products

Atlassian Jira: before 7.6.7 — fixed in 7.6.7
Atlassian Jira: from 7.7.0 before 7.7.5; from 7.8.0 before 7.8.5; from 7.9.0 before 7.9.3; from 7.10.0 before 7.10.2 — fixed in 7.10.2, 7.7.5, 7.8.5, 7.9.3

How to fix

Upgrade to a fixed version: Atlassian Jira 7.6.7; Atlassian Jira 7.10.2, 7.7.5, 7.8.5, 7.9.3. Check the vendor advisory for mitigations.

References

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