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Critical9.8Atlassian

Critical [CVE-2020-36239] Jira Service Management: Jira Data Center, Jira Core Data Center, Jira Software Data Center from version 6.3.0 before 8.5.16, from 8.6.0 before 8.13.8…

This critical-severity Atlassian advisory covers CVE-2020-36239 affecting Jira Service Management, Jira Software.

CVE-2020-36239 Published Jul 29, 2021Updated by vendor Jun 17, 2026
Affected products & platforms
AtlassianJira
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Summary

Jira Data Center, Jira Core Data Center, Jira Software Data Center from version 6.3.0 before 8.5.16, from 8.6.0 before 8.13.8, from 8.14.0 before 8.17.0 and Jira Service Management Data Center from version 2.0.2 before 4.5.16, from version 4.6.0 before 4.13.8, and from version 4.14.0 before 4.17.0 exposed a Ehcache RMI network service which attackers, who can connect to the service, on port 40001 and potentially 40011[0][1], could execute arbitrary code of their choice in Jira through deserialization due to a missing authentication vulnerability.

While Atlassian strongly suggests restricting access to the Ehcache ports to only Data Center instances, fixed versions of Jira will now require a shared secret in order to allow access to the Ehcache service. [0] In Jira Data Center, Jira Core Data Center, and Jira Software Data Center versions prior to 7.13.1, the Ehcache object port can be randomly allocated. [1] In Jira Service Management Data Center versions prior to 3.16.1, the Ehcache object port can be randomly allocated.

Affected versions
  • 6.3.0
  • 8.6.0
  • 8.14.0
  • 2.0.2
  • 4.6.0
  • 4.14.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 8.5.16
  • 8.13.8
  • 8.17.0
  • 4.5.16
  • 4.13.8
  • 4.17.0
  • 7.13.1
  • 3.16.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 8.5.16, 8.13.8, 8.17.0, 4.5.16, 4.13.8, 4.17.0. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

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