All vulnerabilities
CVE-2021-26086

Atlassian Jira Server and Data Center Path Traversal Vulnerability

Atlassian Jira Server and Data CenterApplications & CMS
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationExploited in the wildAdded to KEV 12 Nov 2024CISA KEV
Exploit odds (EPSS)>99.9%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in8.5.14Also 8.13.6, 8.16.1CVE List
Federal deadline3 Dec 2024Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 16 Aug 2021, 00:15 UTCPublishedCVE List
  2. 6 Oct 2021Exploit code publicExploit-DB
  3. 12 Nov 2024Added to CISA KEVCISA KEV

Public exploit code and templates 2

  • Webapps exploitAtlassian Jira Server Data Center 8.16.0 - Arbitrary File Read 6 Oct 2021Exploit-DB
  • Scanner templateAtlassian Jira Limited - Local File InclusionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

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.

Text from CVE List

Affected versions 10

  • Jira Serveraffected: unspecified before 8.5.14CVE List
  • Jira Serveraffected: 8.6.0 before unspecifiedCVE List
  • Jira Serveraffected: unspecified before 8.13.6CVE List
  • Jira Serveraffected: 8.14.0 before unspecifiedCVE List
  • Jira Serveraffected: unspecified before 8.16.1CVE List
  • Jira Data Centeraffected: unspecified before 8.5.14CVE List
  • Jira Data Centeraffected: 8.6.0 before unspecifiedCVE List
  • Jira Data Centeraffected: unspecified before 8.13.6CVE List
  • Jira Data Centeraffected: 8.14.0 before unspecifiedCVE List
  • Jira Data Centeraffected: unspecified before 8.16.1CVE List

References 3