CVE-2021-26086: Atlassian Jira Server and Data Center Path Traversal Vulnerability
Atlassian Jira Server and Data Center contain a path traversal vulnerability that allows a remote attacker to read particular files in the /WEB-INF/web.xml endpoint.
| Vendor | Atlassian |
|---|---|
| Product | Jira Server and Data Center |
| Date added to KEV | 2024-11-12 |
| Due date (BOD 22-01) | 2024-12-03 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-22 |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of Atlassian Jira Server and Data Center in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2024-12-03 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2021-26086 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://jira.atlassian.com/browse/JRASERVER-72695
- https://nvd.nist.gov/vuln/detail/CVE-2021-26086