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Vulnerability · Published Jan 16, 2026 · Assigned by GitHub_M

CVE-2026-23745node-tar Vulnerable to Arbitrary File Overwrite and Symlink Poisoning via Insufficient Path Sanitization

High 8.2

In plain English

A high-severity path traversal in node-tar from isaacs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.4%top 68.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC

Official description

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10sgx-common2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-common2.26-7.el9ALSA-2026:18868
AlmaLinux:10sgx-libs2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-libs2.26-7.el9ALSA-2026:18868
AlmaLinux:10sgx-mpa2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-mpa2.26-7.el9ALSA-2026:18868
AlmaLinux:10sgx-pccs2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-pccs2.26-7.el9ALSA-2026:18868
AlmaLinux:10sgx-pccs-admin2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-pccs-admin2.26-7.el9ALSA-2026:18868
AlmaLinux:10sgx-pckid-tool2.26-7.el10ALSA-2026:18480
AlmaLinux:9sgx-pckid-tool2.26-7.el9ALSA-2026:18868
AlmaLinux:10tdx-qgs2.26-7.el10ALSA-2026:18480
AlmaLinux:9tdx-qgs2.26-7.el9ALSA-2026:18868
Debian:12node-tar6.1.13+~cs7.0.5-1+deb12u1DEBIAN-CVE-2026-23745
Debian:13node-tar6.2.1+~cs7.0.8-1+deb13u1DEBIAN-CVE-2026-23745
Debian:14node-tar6.2.1+ds1+~cs6.1.13-6DEBIAN-CVE-2026-23745
Rocky Linux:10linux-sgx0:2.26-7.el10RLSA-2026:18480
Rocky Linux:9linux-sgx0:2.26-7.el9RLSA-2026:18868
Ubuntu:22.04:LTSnode-tarno fix listedUBUNTU-CVE-2026-23745
Ubuntu:24.04:LTSnode-tarno fix listedUBUNTU-CVE-2026-23745
Ubuntu:25.10node-tarno fix listedUBUNTU-CVE-2026-23745
Ubuntu:26.04:LTSnode-tarno fix listedUBUNTU-CVE-2026-23745
npmtar7.5.3GHSA-8qq5-rm4j-mr97

Affected products (as reported)

VendorProductVersions
isaacs node-tar < 7.5.3

Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References