{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42574", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-28T17:26:12.085Z", "datePublished": "2026-05-09T19:24:48.497Z", "dateUpdated": "2026-05-09T19:24:48.497Z"}, "containers": {"cna": {"title": "apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-59", "lang": "en", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6"}, {"name": "https://github.com/chainguard-dev/apko/pull/2187", "tags": ["x_refsource_MISC"], "url": "https://github.com/chainguard-dev/apko/pull/2187"}, {"name": "https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442", "tags": ["x_refsource_MISC"], "url": "https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442"}, {"name": "https://github.com/chainguard-dev/apko/releases/tag/v1.2.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/chainguard-dev/apko/releases/tag/v1.2.5"}], "affected": [{"vendor": "chainguard-dev", "product": "apko", "versions": [{"version": ">= 0.14.8, < 1.2.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-09T19:24:48.497Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-qq3r-w4hj-gjp6", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-42574", "lastModified": "2026-05-09T20:16:29.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-09T20:16:29.420", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442"}, {"source": "security-advisories@github.com", "url": "https://github.com/chainguard-dev/apko/pull/2187"}, {"source": "security-advisories@github.com", "url": "https://github.com/chainguard-dev/apko/releases/tag/v1.2.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-59"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.14.8,1.2.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "apko", "source": "cna", "vendor": "chainguard-dev"}, "product": "apko", "vendor": "chainguard-dev"}], "created": "2026-05-09T20:30:40.834941+00:00", "updated": "2026-05-09T21:00:12.731676+00:00", "vendors": ["chainguard-dev", "chainguard-dev$PRODUCT$apko"]}