Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host_CVE-2026-42195

{
    "lastseen": "",
    "description": "draw.io is a configurable diagramming and whiteboarding application. Prior to version 29.7.9, the draw.io client accepts a ?gitlab= URL parameter that overrides the GitLab server URL used during OAuth sign-in. A crafted link causes the user's click on draw.io's \"Authorize in GitLab\" dialog to open a popup on the attacker-controlled host instead of gitlab.com. This can lead to credential fishing and session state token exfiltration. This issue has been patched in version 29.7.9.",
    "published": "2026-05-08T21:22:40.678Z",
    "modified": "2026-05-08T21:22:40.678Z",
    "type": "cve",
    "title": "Unvalidated gitlab URL parameter redirects OAuth authorize step to attacker-controlled host",
    "source": "GitHub_M",
    "references": "https://github.com/jgraph/drawio/security/advisories/GHSA-8x7j-m8px-7p8x\nhttps://github.com/jgraph/drawio/issues/493\nhttps://github.com/jgraph/drawio/releases/tag/v29.7.9",
    "id": "CVE-2026-42195",
    "bulletinFamily": "",
    "cwe": [
        "CWE-601",
        "CWE-200"
    ],
    "cvelist": null,
    "sourceData": "jgraph drawio < 29.7.9",
    "sourceHref": "",
    "cvss": {
        "score": 3.4,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "drawio",
    "version": "< 29.7.9",
    "vendor": "jgraph",
    "ai_description": "",
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    "ai_score": 0
}