{"id":"CVE-2026-42574","summary":"apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root","details":"apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before version 1.2.5, a crafted .apk could install a TypeSymlink tar entry whose target pointed outside the build root, and a subsequent directory-creation or file-write entry in the same or later archive could traverse that symlink to reach host paths the build user could write to. This issue has been patched in version 1.2.5.","aliases":["GHSA-qq3r-w4hj-gjp6","GO-2026-5589"],"modified":"2026-08-12T03:51:16.185667356Z","published":"2026-05-09T19:24:48.497Z","related":["CGA-wcvc-3v7c-4jp4","openSUSE-SU-2026:21483-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42574.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-22","CWE-59"]},"references":[{"type":"WEB","url":"https://github.com/chainguard-dev/apko/releases/tag/v1.2.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42574.json"},{"type":"ADVISORY","url":"https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42574"},{"type":"FIX","url":"https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442"},{"type":"FIX","url":"https://github.com/chainguard-dev/apko/pull/2187"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chainguard-dev/apko","events":[{"introduced":"95e33993764a6a6f7cc4098453260cc6da7e71a1"},{"fixed":"f5a96e1299ac81c7ea9441705ec467688086f442"}],"database_specific":{"extracted_events":[{"introduced":"0.14.8"},{"fixed":"1.2.5"},{"introduced":"0"}],"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"]}}],"versions":["v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.16","v1.1.15","v1.1.14","v1.1.13","v1.1.12","v1.1.11","v1.1.10","v1.1.9","v1.1.8","v1.1.7","v1.1.6","v1.1.5","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.30.35","v0.30.34","v0.30.33","v0.30.32","v0.30.31","v0.30.30","v0.30.29","v0.30.28","v0.30.27","v0.30.26","v0.30.25","v0.30.24","v0.30.23","v0.30.22","v0.30.21","v0.30.20","v0.30.19","v0.30.18","v0.30.17","v0.30.16","v0.30.15","v0.30.14","v0.30.13","v0.30.12","v0.30.11","v0.30.10","v0.30.9","v0.30.8","v0.30.7","v0.30.6","v0.30.5","v0.30.4","v0.30.3","v0.30.2","v0.30.1","v0.30.0","v0.29.10","v0.29.9","v0.29.8","v0.29.7","v0.29.6","v0.29.5","v0.29.4","v0.29.3","v0.29.2","v0.29.1","v0.29.0","v0.28.0","v0.27.9","0.27.8","v0.27.7","v0.27.6","v0.27.5","v0.27.4","v0.27.3","v0.27.2","v0.27.1","v0.27.0","v0.26.1","v0.26.0","v0.25.7","v0.25.6","v0.25.5","v0.25.4","v0.25.3","v0.25.2","v0.25.1","v0.25.0","v0.24.0","v0.23.0","v0.22.7","v0.22.6","v0.22.5","v0.22.4","v0.22.3","v0.22.2","v0.22.1","v0.21.0","v0.20.2","v0.20.1","v0.20.0","v0.19.9","v0.19.8","v0.19.7","v0.19.6","v0.19.5","v0.19.4","v0.19.3","v0.19.2","v0.19.1","v0.19.0","v0.18.1","v0.18.0","v0.17.0","v0.16.0","v0.15.0","v0.14.9","v0.14.8"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42574.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}