Threat intelligence dashboard
CVE-2026-101894critical

@xhmikosr/decompress: Path traversal via symlink chain

The decompress package for Node.js extracts archives. Prior to 10.2.2 and 11.1.4, the default decompress(input, output) API relies on lexical containment checks that do not account for the kernel following a planted symlink chain. An attacker can supply a crafted archive containing chained symlink entries so that a later entry resolves outside the output directory. This allows files outside output to be read or written, and overwriting startup scripts or configuration can lead to remote code execution. The maintained @xhmikosr/decompress package is fixed in 10.2.2 and 11.1.4, but the separately affected unmaintained decompress package remains unpatched through 4.2.1. This vulnerability results from a bypass of the incomplete hardening for CVE-2026-53486. @xhmikosr/decompress is fixed in versions 10.2.2 and 11.1.4.

Risk score

9.1

CVSS 3.1

Vendor
XhmikosR, kevva
Product
decompress
CWE
CWE-22, CWE-59
Published
Sep 28, 2026
Updated
Sep 28, 2026
CISA KEV
Not flagged

Affected products and versions

decompress

XhmikosR

Version / rangeStatusType
< 10.2.2affected—
>= 11.0.0, < 11.1.4affected—

decompress

kevva

Version / rangeStatusType
<= 4.2.1affected—

Technical metrics

9.1

CVSS 3.1

Severity
critical
Source
GitHub_M
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N