CVE-2026-53486
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
A vulnerability in the decompress package for Node.js allows creating files and links outside the target directory during archive extraction. The issue stems from missing validation of hardlink and symlink paths, prefix-based path containment checks, and failure to remove setuid, setgid, or sticky bits from file modes.
Risk Assessment
An attacker can use a crafted archive to read or write files outside the target directory, potentially leading to data confidentiality or integrity breaches, or privilege escalation on the system.
Recommendation
Immediately update the @xhmikosr/decompress package to version 10.2.1 or 11.1.3 depending on the branch in use.
Other vulnerabilities in decompress
See all- CVE-2026-39246High
The 'decompress' library before version 4.2.2 allows arbitrary symlink creation during archive extraction. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory, leading to information disclosure.
- CVE-2026-39245Medium
In the 'decompress' library before version 4.2.2, a path traversal and arbitrary file write vulnerability exists due to improper path containment check. The safeMakeDir function and extraction path validation use String.indexOf() to verify the resolved path is within the output directory, which can be bypassed by missing a path separator boundary. An attacker can write arbitrary files outside the intended directory, bypassing the fix for CVE-2020-12265.
- CVE-2026-39243Medium
The 'decompress' library before version 4.2.2 allows arbitrary hardlink creation during archive extraction. An attacker can craft an archive with a hardlink entry containing an absolute path to any file on the same filesystem, leading to file content disclosure or overwriting.
- CVE-2026-10732Medium
The decompress package in all versions is vulnerable to arbitrary file write via archive extraction (Zip Slip). The vulnerability is due to microtask processing order that bypasses existing protections against writing through symlinks. An attacker can provide a crafted ZIP archive, potentially leading to remote code execution.
Original NVD description (English source)
The decompress package for Node.js extracts archives. Prior to 10.2.1 and 11.1.3, archive extraction can create files and links outside the target directory. When extracting an archive to a directory, a crafted archive can read or write files outside that directory because hardlink and symlink entries are created without checking where targets point, path containment used a string prefix comparison, and file modes failed to remove setuid, setgid, or sticky bits. This issue is fixed in @xhmikosr/decompress versions 10.2.1 and 11.1.3.