ClosedPatched

Atlassian Jira Server and Data Center Path Traversal

Atlassian Jira Server and Data Center

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. Added to the CISA KEV catalog on 2024-11-12. CVE-2021-26086 was assigned before 2024; the KEV listing came in 2024.

Why this severity: CVSS 5.3 (v3.1, CISA-ADP), actively exploited (CISA KEV)

Started: Nov 12, 2024
Closed: Nov 12, 2024
CVE: CVE-2021-26086

Follow this incident

Updated Nov 12, 2024

Affected

See vendor advisory (versions are not listed in the KEV record)

Fixed in

See vendor advisory linked in sources

Timeline1

Nov 12, 2024
CISA added CVE-2021-26086 to the KEV catalog (federal deadline 2024-12-03)
Source

Advisories3

Notes & caveats

Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).

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