What’s Vulnerable › Vulnerabilities

CVE-2019-11580: Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 95.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-06-03 · updated 2026-06-17

Description

Atlassian Crowd and Crowd Data Center had the pdkinstall development plugin incorrectly enabled in release builds. Attackers who can send unauthenticated or authenticated requests to a Crowd or Crowd Data Center instance can exploit this vulnerability to install arbitrary plugins, which permits remote code execution on systems running a vulnerable version of Crowd or Crowd Data Center. All versions of Crowd from version 2.1.0 before 3.0.5 (the fixed version for 3.0.x), from version 3.1.0 before 3.1.6 (the fixed version for 3.1.x), from version 3.2.0 before 3.2.8 (the fixed version for 3.2.x), from version 3.3.0 before 3.3.5 (the fixed version for 3.3.x), and from version 3.4.0 before 3.4.4 (the fixed version for 3.4.x) are affected by this vulnerability.

Affected products

• Atlassian Crowd: from 2.1.0 before 3.0.5; from 3.1.0 before 3.1.6; from 3.2.0 before 3.2.8; from 3.3.0 before 3.3.5; from 3.4.0 before 3.4.4 — fixed in 3.0.5, 3.1.6, 3.2.8, 3.3.5, 3.4.4

How to fix

Upgrade to a fixed version: Atlassian Crowd 3.0.5, 3.1.6, 3.2.8, 3.3.5. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/163810/Atlassian-Crowd-pdkinstall-Remote-Code-Execution.html
• http://www.securityfocus.com/bid/108637
• https://jira.atlassian.com/browse/CWD-5388
• http://packetstormsecurity.com/files/163810/Atlassian-Crowd-pdkinstall-Remote-Code-Execution.html
• http://www.securityfocus.com/bid/108637
• https://jira.atlassian.com/browse/CWD-5388
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11580

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