Libsoup: libsoup: http request smuggling via malformed chunk headers_CVE-2026-1801

{
    "lastseen": "",
    "description": "A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP requests from a single network message, potentially leading to information disclosure.",
    "published": "2026-02-03T20:12:21.360Z",
    "modified": "2026-02-03T20:12:21.360Z",
    "type": "cve",
    "title": "Libsoup: libsoup: http request smuggling via malformed chunk headers",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-1801\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2436315",
    "id": "CVE-2026-1801",
    "bulletinFamily": "",
    "cwe": [
        "CWE-444"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}