{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-25121",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-01-29T14:03:42.539Z",
        "datePublished": "2026-02-04T19:02:17.979Z",
        "dateUpdated": "2026-02-04T19:18:52.495Z"
    },
    "containers": {
        "cna": {
            "title": "apko is vulnerable to path traversal in apko dirFS which allows filesystem writes outside base",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-23",
                            "lang": "en",
                            "description": "CWE-23: Relative Path Traversal",
                            "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-5g94-c2wx-8pxw",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-5g94-c2wx-8pxw"
                },
                {
                    "name": "https://github.com/chainguard-dev/apko/commit/d8b7887a968a527791b3c591ae83928cb49a9f14",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/chainguard-dev/apko/commit/d8b7887a968a527791b3c591ae83928cb49a9f14"
                }
            ],
            "affected": [
                {
                    "vendor": "chainguard-dev",
                    "product": "apko",
                    "versions": [
                        {
                            "version": ">= 0.14.8, < 1.1.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-02-04T19:02:17.979Z"
            },
            "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 1.1.1, a path traversal vulnerability was discovered in apko's dirFS filesystem abstraction. An attacker who can supply a malicious APK package (e.g., via a compromised or typosquatted repository) could create directories or symlinks outside the intended installation root. The MkdirAll, Mkdir, and Symlink methods in pkg/apk/fs/rwosfs.go use filepath.Join() without validating that the resulting path stays within the base directory. This issue has been patched in version 1.1.1."
                }
            ],
            "source": {
                "advisory": "GHSA-5g94-c2wx-8pxw",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-02-04T19:18:20.797586Z",
                                "id": "CVE-2026-25121",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-02-04T19:18:52.495Z"
                }
            }
        ]
    }
}