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CVE-2026-101894— @xhmikosr/decompress: Path traversal via symlink chain

Quick assessment

Affected
XhmikosR decompress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Node.js 的 包用于解压归档文件。在 10.2.2 和 11.1.4 版本之前，默认的 API 依赖于词法包含检查（lexical containment checks），但这些检查未能考虑到内核可能跟随攻击者植入的符号链接链（symlink chain）。攻击者可以提供一个精心构造的包含串联符号链接条目的归档文件，使得后续的条目解析到输出目录之外。这导致攻击者可以读取或写入输出目录之外的文件；通过覆盖启动脚本或配置文件，可能引发远程代码执行。 维护中的 包已在版本 10.2.2 和 11.1.4 中修复该问

CVSS 9.1 · Critical

Affected Version Matrix 3

VendorProduct Version RangeStatus
kevva decompress <= 4.2.1 affected
XhmikosR decompress < 10.2.2 affected
>= 11.0.0, < 11.1.4 affected
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I. Basic Information for CVE-2026-101894

Vulnerability Information
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Vulnerability Title
@xhmikosr/decompress: Path traversal via symlink chain
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
XhmikosR decompress < 10.2.2 -
kevva decompress <= 4.2.1 -

II. Public POCs for CVE-2026-101894

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III. Intelligence Information for CVE-2026-101894

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Patches & Fixes for CVE-2026-101894 (2)

Vendor Advisories for CVE-2026-101894 (1)

Vendor Pages for CVE-2026-101894 (1)

Other References for CVE-2026-101894 (1)

IV. Related Vulnerabilities

Same product: decompress
Same vendor: XhmikosR
Same weakness: CWE-22

V. Comments for CVE-2026-101894

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