CVE-2021-26086: Atlassian Jira Server and Data Center Path Traversal Vulnerability
First published: Mon Aug 16 2021(Updated: )
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
Credit: security@atlassian.com security@atlassian.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Atlassian Jira Data Center | <8.5.14 | |
| Atlassian Jira Data Center | >=8.6.0<8.13.6 | |
| Atlassian Jira Data Center | >=8.14.0<8.16.1 | |
| Atlassian Jira Server | <8.5.14 | |
| Atlassian Jira Server | >=8.6.0<8.13.6 | |
| Atlassian Jira Server | >=8.14.0<8.16.1 | |
| Atlassian Jira Server and Data Center |
Remedy
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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Reference Links
Frequently Asked Questions
What is vulnerability CVE-2021-26086?
Vulnerability CVE-2021-26086 is a path traversal vulnerability in the /WEB-INF/web.xml endpoint of Atlassian Jira Server and Data Center.
What can a remote attacker do with CVE-2021-26086?
A remote attacker can read particular files on the affected Atlassian Jira Server and Data Center versions.
Which versions of Atlassian Jira Server and Data Center are affected by CVE-2021-26086?
The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
How severe is vulnerability CVE-2021-26086?
Vulnerability CVE-2021-26086 has a severity rating of 5.3 (medium).
Where can I find more information about vulnerability CVE-2021-26086?
You can find more information about vulnerability CVE-2021-26086 at the following references: [Packet Storm Security](http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.html) and [Atlassian Jira Issue Tracker](https://jira.atlassian.com/browse/JRASERVER-72695).
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