CVE-2026-23950

A flaw was found in node-tar, a library for Node.js. This race condition vulnerability occurs due to incomplete handling of Unicode path collisions within the path-reservations system on case-insensitive filesystems, such as macOS APFS. A remote attacker can exploit this by providing a specially crafted tar archive containing filenames that cause these collisions, bypassing internal concurrency safeguards. Successful exploitation can lead to arbitrary file overwrite.

This vulnerability is rated Important for Red Hat products. The node-tar library is susceptible to a race condition due to incomplete handling of Unicode path collisions, which can lead to arbitrary file overwrites via symlink poisoning. However, this issue primarily affects case-insensitive or normalization-insensitive filesystems. Red Hat Enterprise Linux and other Red Hat products typically utilize case-sensitive filesystems, which may limit the direct impact of this flaw in default configurations.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.