CVE-2026-23745

high

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23745.json

https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97

https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e

https://bugzilla.redhat.com/show_bug.cgi?id=2430538

https://access.redhat.com/security/cve/CVE-2026-23745

https://access.redhat.com/errata/RHSA-2026:6192

https://access.redhat.com/errata/RHSA-2026:3782

https://access.redhat.com/errata/RHSA-2026:2926

https://access.redhat.com/errata/RHSA-2026:2900

https://access.redhat.com/errata/RHSA-2026:2144

https://access.redhat.com/errata/RHSA-2026:19712

https://access.redhat.com/errata/RHSA-2026:18868

https://access.redhat.com/errata/RHSA-2026:18480

Details

Source: Mitre, NVD

Published: 2026-01-16

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 8.2

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N

Severity: High

EPSS

EPSS: 0.00016