{"id":"CVE-2026-54574","aliases":["GHSA-9xq3-3fqg-4vg7","PYSEC-2026-3608"],"url":"https://o3.security/vulnerability/CVE-2026-54574","summary":"`proot-distro install` has a Symlink Escape (Arbitrary Host File Write) via Malicious Tar Archive","details":"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.","published":"2026-07-29T16:32:15.576Z","modified":"2026-08-12T03:51:11.504041653Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"},"epss":{"score":0.00145,"percentile":0.04097,"asOf":"2026-09-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"proot-distro","fixedVersion":"5.1.5"}],"fix":{"url":"https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45","label":"termux/proot-distro@a96d7a9"},"references":[{"type":"WEB","url":"https://github.com/termux/proot-distro/releases/tag/v5.1.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54574.json"},{"type":"ADVISORY","url":"https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54574"},{"type":"FIX","url":"https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:11.504041653Z"}}