Infinite loop in node-tar - CVE-2026-59874

Vulnerability identifier: #VU135767

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-59874

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to loop with an unreachable exit condition in tar.replace() when scanning an attacker-controlled existing archive. A remote attacker can supply a specially crafted tar archive with a negative base-256 encoded entry size to cause a denial of service.

Only applications that call the replace API on an existing attacker-controlled archive are affected; plain extraction-only workflows are not affected.

node-tar
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Confluence Data Center
Jira Software Data Center
Jira Service Management Data Center
Ansible Automation Platform
nodejs22 (Red Hat package)
nodejs24 (Red Hat package)

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 Software Data Center - addressed in versions 10.3.18, 11.3.9
Jira Service Management Data Center - addressed in versions 10.3.18, 11.3.10
Ansible Automation Platform - update to 2.2.0
nodejs22 (Red Hat package) - addressed in versions 22.23.1-3.el10_0, 22.23.1-4.el10_2
nodejs24 (Red Hat package) - update to 24.18.0-3.el10_2

• https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w

• Multiple vulnerabilities in node-tar
• Red Hat Enterprise Linux 8 update for the nodejs:24 module
• Red Hat Enterprise Linux 10 update for nodejs22
• Red Hat Enterprise Linux 10 update for nodejs24
• Red Hat Enterprise Linux 10 update for nodejs22
• Multiple vulnerabilities in Ansible Automation Platform 2.2 packages
• Multiple vulnerabilities in Confluence Data Center
• Multiple vulnerabilities in Jira Service Management Data Center
• Multiple vulnerabilities in Jira Software Data Center