CVE-2026-54574

HighCVSS 8.2

Published: 29/07/2026(UTC)Updated: 30/07/2026(UTC)Translated: 29/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.15%

4th percentile - higher than 4% of all known CVEs

Summary

In proot-distro before version 5.1.5, installation functions extracting tar archives and Docker layers did not validate archive-controlled symlink targets. This allows planting a symlink to a host path and writing files to the host filesystem.

Risk Assessment

An attacker can overwrite host system files, potentially leading to privilege escalation or full system compromise.

Recommendation

Update proot-distro to version 5.1.5 or later.

Other vulnerabilities in proot-distro

CVE-2026-54727High
In proot-distro before version 5.1.6, the restore function accepted hardlink entries whose linkname referenced another installed container without verifying the source. This allows copying files between isolated containers via a crafted archive.

Original NVD description (English source)

proot-distro is a utility for managing proot containers. Prior to version 5.1.5, proot-distro install extracted plain tarball root filesystems through _extract_plain_tar() in proot_distro/commands/install.py and Docker layers through _apply_layer() in proot_distro/helpers/docker.py without validating archive-controlled symlink targets in member.linkname, allowing a malicious archive to plant an absolute host-path symlink and write files through it onto the host filesystem. This issue is fixed in version 5.1.5.