{
  "cveId": "CVE-2025-4476",
  "url": "https://patchblox.com/security/cve/CVE-2025-4476",
  "summary": "CVE-2025-4476 is fixed in 23 products on 1 platform, first by gir1.2-soup-2.4 2.62.1-1ubuntu0.4\u002Besm4, released May 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Libsoup: null pointer dereference in libsoup may lead to denial of service",
  "description": "A denial-of-service vulnerability has been identified in the libsoup HTTPclient library. This flaw can be triggered when a libsoup client receives a401 (Unauthorized) HTTP response containing a specifically crafted domainparameter within the WWW-Authenticate header. Processing this malformedheader can lead to a crash of the client application using libsoup. Anattacker could exploit this by setting up a malicious HTTP server. If auser\u0027s application using the vulnerable libsoup library connects to thismalicious server, it could result in a denial-of-service. Successfulexploitation requires tricking a user\u0027s client application into connectingto the attacker\u0027s malicious server.",
  "published": "2025-05-16T11:16:00Z",
  "severity": "Moderate",
  "cvss": 4.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
  "cwe": "NULL Pointer Dereference",
  "epss": 0.0055,
  "epssPercentile": 0.4625,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-4476",
  "fixes": [
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      "platform": "linux",
      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.62.1-1ubuntu0.4\u002Besm4",
      "fix": "gir1.2-soup-2.4 2.62.1-1ubuntu0.4\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-gir1.2-soup-2.4-2.62.1-1ubuntu0.4-esm4",
      "released": "2025-05-16T11:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.70.0-1ubuntu0.5",
      "fix": "gir1.2-soup-2.4 2.70.0-1ubuntu0.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-gir1.2-soup-2.4-2.70.0-1ubuntu0.5",
      "released": "2025-05-16T11:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.74.2-3ubuntu0.5",
      "fix": "gir1.2-soup-2.4 2.74.2-3ubuntu0.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-gir1.2-soup-2.4-2.74.2-3ubuntu0.5",
      "released": "2025-05-16T11:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.74.3-6ubuntu1.5",
      "fix": "gir1.2-soup-2.4 2.74.3-6ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-gir1.2-soup-2.4-2.74.3-6ubuntu1.5",
      "released": "2025-05-16T11:16:00Z"
    },
    {
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      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 24.10 (oracular)",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-gir1.2-soup-2.4-2.74.3-7ubuntu0.5",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-2.4",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.74.3-10ubuntu0.3",
      "fix": "gir1.2-soup-2.4 2.74.3-10ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-gir1.2-soup-2.4-2.74.3-10ubuntu0.3",
      "released": "2026-01-16T01:42:25Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-3.0",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-gir1.2-soup-3.0-3.0.7-0ubuntu1-esm4",
      "released": "2025-05-16T11:16:00Z"
    },
    {
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      "fix": "gir1.2-soup-3.0 3.4.4-5ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-gir1.2-soup-3.0-3.4.4-5ubuntu0.4",
      "released": "2025-05-16T11:16:00Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-3.0",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "3.6.0-2ubuntu0.4",
      "fix": "gir1.2-soup-3.0 3.6.0-2ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-gir1.2-soup-3.0-3.6.0-2ubuntu0.4",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-soup-3.0",
      "release": "Ubuntu 25.04 (plucky)",
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      "fix": "gir1.2-soup-3.0 3.6.5-1ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-gir1.2-soup-3.0-3.6.5-1ubuntu0.1",
      "released": "2026-01-16T01:42:25Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2025-1310",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1310",
      "released": "2025-12-08T12:37:00Z"
    },
    {
      "platform": "linux",
      "product": "libsoup",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "3.4.4-150600.3.10.1",
      "fix": "SUSE-SU-2025:01812-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-01812-1",
      "released": "2025-06-04T10:12:11Z"
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      "platform": "linux",
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      "platform": "linux",
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      "release": "sles 15.7",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libsoup-2.4-1-2.74.3-6ubuntu1.5",
      "released": "2025-05-16T11:16:00Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libsoup-2.4-1-2.74.3-7ubuntu0.5",
      "released": "2026-01-16T01:42:24Z"
    },
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      "platform": "linux",
      "product": "libsoup-2.4-1",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libsoup-2.4-1-2.74.3-10ubuntu0.3",
      "released": "2026-01-16T01:42:25Z"
    },
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      "platform": "linux",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libsoup-3.0-0-3.0.7-0ubuntu1-esm4",
      "released": "2025-05-16T11:16:00Z"
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      "product": "libsoup-3.0-0",
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      "fix": "libsoup-3.0-0 3.6.0-2ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libsoup-3.0-0-3.6.0-2ubuntu0.4",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libsoup-gnome-2.4-1-2.74.3-6ubuntu1.5",
      "released": "2025-05-16T11:16:00Z"
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}