Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment_CVE-2026-5119

{
    "lastseen": "",
    "description": "A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.",
    "published": "2026-03-30T05:35:57.099Z",
    "modified": "2026-04-01T19:15:26.768Z",
    "type": "cve",
    "title": "Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-5119\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2452932\nhttps://gitlab.gnome.org/GNOME/libsoup/-/issues/502",
    "id": "CVE-2026-5119",
    "bulletinFamily": "",
    "cwe": [
        "CWE-319"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 5.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
    "ai_description": "",
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    "ai_score": 0
}