November 12, 2024 · Applied Cybernetics Group
CVE-2021-26086 — Atlassian Jira Server and Data Center
Atlassian Jira Server and Data Center Path Traversal Vulnerability
- Added to KEV
2024-11-12- Federal due date
2024-12-03- Vendor
- Atlassian
- Product
- Jira Server and Data Center
- EPSS
- 99.9th percentile (score 0.942, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-26086
CISA short description
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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.