CVE-2017-5983: Atlassian Jira

Critical severity, CVSS 9.8. EPSS: 16.2% chance of exploitation in the next 30 days.

The JIRA Workflow Designer Plugin in Atlassian JIRA Server before 6.3.0 improperly uses an XML parser and deserializer, which allows remote attackers to execute arbitrary code, read arbitrary files, or cause a denial of service via a crafted serialized Java object.

Affected products

• Atlassian Jira: version 4.2.4 only; version 4.3 only; version 4.3.1 only; version 4.3.2 only; version 4.3.3 only; version 4.3.4 only; …

Published 2017-04-10. Last modified 2026-06-17.