AIOHTTP vulnerable to cross-origin redirect with per-request cookies_CVE-2026-47265

{
    "lastseen": "",
    "description": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the `cookies` parameter on requests are sent after following a cross-origin redirect. If a developer uses the `cookies` parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a `Cookie` header in the `headers` parameter is not vulnerable.",
    "published": "2026-06-02T18:32:50.926Z",
    "modified": "2026-06-02T18:32:50.926Z",
    "type": "cve",
    "title": "AIOHTTP vulnerable to cross-origin redirect with per-request cookies",
    "source": "GitHub_M",
    "references": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg\nhttps://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478",
    "id": "CVE-2026-47265",
    "bulletinFamily": "",
    "cwe": [
        "CWE-346"
    ],
    "cvelist": null,
    "sourceData": "aio-libs aiohttp < 3.14.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.6,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "aiohttp",
    "version": "< 3.14.0",
    "vendor": "aio-libs",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}