{"id":"CVE-2026-54574","state":"PUBLISHED","title":"`proot-distro install` has a Symlink Escape (Arbitrary Host File Write) via Malicious Tar Archive","description":"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.","publishedAt":"2026-07-29T16:32:15.576Z","updatedAt":"2026-07-29T19:24:47.953Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["termux proot-distro"],"affected":[{"vendor":"termux","product":"proot-distro","versions":[{"version":"< 5.1.5","status":"affected"}]}],"references":["https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7","https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45","https://github.com/termux/proot-distro/releases/tag/v5.1.5"],"weaknesses":["CWE-61"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54574.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54574","state":"PUBLISHED","datePublished":"2026-07-29T16:32:15.576Z","dateUpdated":"2026-07-29T19:24:47.953Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T19:15:27.343Z"},"containers":{"cna":{"title":"`proot-distro install` has a Symlink Escape (Arbitrary Host File Write) via Malicious Tar Archive","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"termux","product":"proot-distro","versions":[{"version":"< 5.1.5","status":"affected"}]}],"references":[{"url":"https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7","name":"https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45","name":"https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45","tags":["x_refsource_MISC"]},{"url":"https://github.com/termux/proot-distro/releases/tag/v5.1.5","name":"https://github.com/termux/proot-distro/releases/tag/v5.1.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-61","lang":"en","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-29T16:32:15.576Z"},"source":{"advisory":"GHSA-9xq3-3fqg-4vg7","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T19:13:59.275417Z","id":"CVE-2026-54574","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T19:24:47.953Z"}}]}}}