Rancher Extensions have arbitrary file access via path traversal_CVE-2026-25705

{
    "lastseen": "",
    "description": "A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to:  *  Overwrite Rancher binaries or configuration to inject code.\n\n  *  Write to /var/lib/rancher/ to tamper with cluster state.\n\n  *  If hostPath volumes are mounted, write to the host node filesystem.\n\n  *  Use this issue to chain with other attack vectors.",
    "published": "2026-05-13T08:00:46.097Z",
    "modified": "2026-05-13T08:01:27.283Z",
    "type": "cve",
    "title": "Rancher Extensions have arbitrary file access via path traversal",
    "source": "suse",
    "references": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-25705\nhttps://github.com/rancher/rancher/security/advisories/GHSA-5v3h-x4wf-5c35",
    "id": "CVE-2026-25705",
    "bulletinFamily": "",
    "cwe": [
        "CWE-35"
    ],
    "cvelist": null,
    "sourceData": "SUSE rancher 2.14.0\nSUSE rancher 2.13.0\nSUSE rancher 2.12.0\nSUSE rancher 2.10.11",
    "sourceHref": "",
    "cvss": {
        "score": 8.4,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "rancher",
    "version": "2.14.0",
    "vendor": "SUSE",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}