Type conversion in node-tar - CVE-2026-59871
Published: June 29, 2026
Vulnerability identifier: #VU135766
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59871
CWE-ID: CWE-704
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to incorrect type conversion or cast in the PAX header parser when parsing a crafted tar archive with an all-digit path value. A remote attacker can supply a specially crafted tar archive to cause a denial of service.
The crash occurs as an uncaught TypeError during extraction and bypasses application-level error handling, including error and warning handlers.
Affected software
node-tar
Confluence Data Center
Jira Service Management Data Center
Jira Software Data Center
Confluence Data Center
Jira Service Management Data Center
Jira Software Data Center
How to mitigate CVE-2026-59871
Install security update from vendor's website.
node-tar - update to 7.5.18
Confluence Data Center - addressed in versions 9.2.22, 10.2.14
Jira Service Management Data Center - addressed in versions 10.3.18, 11.3.10
Jira Software Data Center - addressed in versions 10.3.18, 11.3.9
Confluence Data Center - addressed in versions 9.2.22, 10.2.14
Jira Service Management Data Center - addressed in versions 10.3.18, 11.3.10
Jira Software Data Center - addressed in versions 10.3.18, 11.3.9