Review reviewHigh

CVE-2026-29786

isaacs node-tar, Cryostat 4, Logging Subsystem for Red Hat OpenShift

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.

CVSS: 8.2
EPSS: 0.41%
CISA KEV: Not listed
Published: 2026.03.08

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.41%

Technical severityCVSS 8.2

Vulnerability overview

Affected product and versions

Product: isaacs node-tar, Cryostat 4, Logging Subsystem for Red Hat OpenShift
Affected versions: >= < 7.5.10, < 7.5.10
Fixed versions: 7.5.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that isaacs node-tar, Cryostat 4, Logging Subsystem for Red Hat OpenShift and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE: CWE-22, CWE-59