🛡️ CVE-2020-7666 — cpio

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-22 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

github.com/u-root/u-root/pkg/cpio Arbitrary File Write via Archive Extraction (Zip Slip)

This affects all versions of package github.com/u-root/u-root/pkg/cpio up to and including 7.0.0. It is vulnerable to leading, non-leading relative path traversal attacks and symlink based (relative and absolute) path traversal attacks in cpio file extraction.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Weakness class

CVE-2020-7666 is classified as CWE-22: Path Traversal. A file path built from user input is not confined to the intended directory, letting an attacker reach files elsewhere on the filesystem.

Affected software

CVE-2020-7666 is recorded against 1 package.

  • github.com/u-root/u-root/pkg/cpio

Timeline and source

Published on 24 April 2024 and last revised on 13 March 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
snyk.io (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE CWE-22
Public Exploit ✅ No
Source OSV
Published 2024-04-24
Updated 2026-08-12
Modified 2026-03-13
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/u-root/u-root/pkg/cpio — —

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