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      "text": "TuxCare License Agreement",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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      "contact_details": "https://tuxcare.com/contact/",
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          "date": "2026-03-17T10:16:00Z",
          "number": "1",
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    "title": "Security update on CVE-2026-3633"
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      "cve": "CVE-2026-3633",
      "cwe": {
        "id": "CWE-93",
        "name": "Improper Neutralization of CRLF Sequences ('CRLF Injection')"
      },
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libsoup. A remote attacker, by controlling the method parameter of the `soup_message_new()` function, could inject arbitrary headers and additional request data. This vulnerability, known as CRLF (Carriage Return Line Feed) injection, occurs because the method value is not properly escaped during request line construction, potentially leading to HTTP request injection.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-3633"
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          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-3633",
          "url": "https://access.redhat.com/security/cve/CVE-2026-3633"
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          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2445128",
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          "category": "external",
          "summary": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/484",
          "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/484"
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          "category": "no_fix_planned",
          "date": "2026-10-15T15:18:36.477381Z",
          "details": "This flaw is only exploitable if an application using libsoup as an HTTP client passes untrusted input directly into the soup_message_new() method parameter—an uncommon, non-default coding pattern where methods are normally fixed tokens like GET or POST. Even then, the impact is limited to CRLF-based header/request injection in an outbound request with no code execution, privilege escalation, or availability effect. Because it targets client-side request construction rather than exposed server handlers, and requires that specific unsafe parameter usage, it is reasonable to deprioritize in centrally managed server/VM environments.",
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
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          "category": "impact",
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