@xhmikosr/decompress: Path traversal via symlink chain

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-101894
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-28 17:17:48 UTC
Updated2026-09-28 18:17:17 UTC
DescriptionThe 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 And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

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

Problem Types: CWE-22 | CWE-59 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-59 CWE-59: Improper Link Resolution Before File Access ('Link Following')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA XhmikosR Decompress affected < 10.2.2 Not specified
CNA XhmikosR Decompress affected >= 11.0.0, < 11.1.4 Not specified
CNA Kevva Decompress affected <= 4.2.1 Not specified

References

ReferenceSourceLinkTags
github.com/XhmikosR/decompress/releases/tag/v11.1.4 [email protected] github.com
github.com/XhmikosR/decompress/commit/5f4b2f64abb31bbaf1fef8975b595fd7df... [email protected] github.com
github.com/XhmikosR/decompress/commit/f6c88c668216d6a12c6cecf4fe0b6c70bf... [email protected] github.com
github.com/XhmikosR/decompress/releases/tag/v10.2.2 [email protected] github.com
github.com/XhmikosR/decompress/security/advisories/GHSA-hrh2-vp3x-79xf [email protected] github.com
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