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CVE-2019-11580 is a remote code execution vulnerability in Atlassian Crowd and Crowd Data Center caused by the pdkinstall development plugin being incorrectly enabled in production release builds. A remote attacker able to send HTTP requests to a vulnerable Crowd instance can abuse this exposed plugin-installation functionality to install arbitrary plugins. Because installed plugins execute within the application environment, successful exploitation results in arbitrary code execution on the underlying server. Affected versions include Crowd 2.1.0 before 3.0.5, 3.1.0 before 3.1.6, 3.2.0 before 3.2.8, 3.3.0 before 3.3.5, and 3.4.0 before 3.4.4.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module that exploits an unauthenticated remote code execution vulnerability (CVE-2019-11580) in Atlassian Crowd via the pdkinstall development plugin. The exploit works by uploading a malicious Java servlet packaged as a JAR file to the /crowd/admin/uploadplugin.action endpoint. Once uploaded, the servlet can be triggered via a GET request to /plugins/servlet/<plugin_name>, resulting in code execution as the server process. The module is fully weaponized, allowing the attacker to specify any Metasploit Java payload. The code is well-structured, with clear separation of plugin generation, upload, and exploitation logic. The only file present is the Metasploit module itself, written in Ruby.
This repository provides a working exploit for CVE-2019-11580, a remote code execution vulnerability in Atlassian Crowd and Crowd Data Center. The main exploit script (CVE-2019-11580.py) is written in Python and automates the process of uploading a malicious Java plugin (rce.jar) to the vulnerable /crowd/admin/uploadplugin.action endpoint. The plugin contains a servlet (exp.java) that acts as a webshell, allowing arbitrary command execution via HTTP requests to /crowd/plugins/servlet/exp with a 'cmd' parameter. The repository includes the Java source code for the webshell, a plugin descriptor (atlassian-plugin.xml), and a shell script (compile.sh) to build the malicious plugin. The README provides detailed usage instructions, affected versions (Crowd 2.1.0 through 3.4.4), and example commands. The exploit is operational and provides a remote shell on vulnerable targets.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A known (N-day) vulnerability in Atlassian Crowd that the actor attempted to exploit to achieve remote code execution by uploading a malicious JAR payload (rce.jar) to a server hosting e-passport/e-visa services.
An Atlassian vulnerability that CISA KEV’s knownRansomwareCampaignUse field silently flipped to Known during 2025 (evidence of ransomware campaign use).
A known security vulnerability used for initial access/foothold in ransomware intrusion chains (as cited in the context of 01flip ransomware campaigns).
An older vulnerability exploited by threat actors to gain initial access to networks targeted by the 01flip ransomware campaign. It is used as an entry point for further compromise.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.