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Atlassian Jira versions before 8.4.0 expose usernames through the groupuserpicker REST API resource. A remote attacker can query the affected endpoint to enumerate valid usernames, resulting in information disclosure.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a proof-of-concept exploit for CVE-2019-8449, an information disclosure vulnerability in Atlassian Jira versions 2.1 through 8.3.4. The exploit is implemented in a single Python script (CVE-2019-8449.py) and is accompanied by a README.md file that describes the vulnerability, affected versions, and usage instructions. The exploit works by sending a crafted GET request to the /rest/api/latest/groupuserpicker endpoint of a target Jira instance, allowing unauthenticated attackers to enumerate usernames and related information. The script is interactive, prompting the user for the target domain and various query parameters, and then displays the JSON response from the server. No authentication is required, and the exploit leverages a network-based attack vector. The repository is structured simply, with the main exploit logic contained in the Python script and documentation in the README.
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