{
  "cveId": "CVE-2025-4565",
  "url": "https://patchblox.com/security/cve/CVE-2025-4565",
  "summary": "CVE-2025-4565 is fixed in 21 products on 1 platform, first by elpa-protobuf-mode 3.12.4-1ubuntu7.22.04.4, released June 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Unbounded recursion in Python Protobuf",
  "description": "Any project that uses Protobuf Pure-Python backend\u00A0to parse untrustedProtocol Buffers data containing an arbitrary number of recursive groups,recursive messages or a series of SGROUP\u00A0tags can be corrupted by exceedingthe Python recursion limit. This can result in a Denial of service bycrashing the application with a RecursionError. We recommend upgrading toversion =\u003E6.31.1 or beyond commit\u00A017838beda2943d08b8a9d4df5b68f5f04f26d901",
  "published": "2025-06-16T08:15:00Z",
  "severity": "Important",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "cwe": "Uncontrolled Recursion",
  "epss": 0.00255,
  "epssPercentile": 0.1721,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-4565",
  "fixes": [
    {
      "platform": "linux",
      "product": "elpa-protobuf-mode",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.12.4-1ubuntu7.22.04.4",
      "fix": "elpa-protobuf-mode 3.12.4-1ubuntu7.22.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-elpa-protobuf-mode-3.12.4-1ubuntu7.22.04.4",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "elpa-protobuf-mode",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.21.12-8.2ubuntu0.2",
      "fix": "elpa-protobuf-mode 3.21.12-8.2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-elpa-protobuf-mode-3.21.12-8.2ubuntu0.2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "elpa-protobuf-mode",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "3.21.12-10ubuntu0.1",
      "fix": "elpa-protobuf-mode 3.21.12-10ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-elpa-protobuf-mode-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.0.0-9.1ubuntu1.1\u002Besm3",
      "fix": "libprotobuf-java 3.0.0-9.1ubuntu1.1\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libprotobuf-java-3.0.0-9.1ubuntu1.1-esm3",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-java",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.1.3-2ubuntu5.2\u002Besm2",
      "fix": "libprotobuf-java 3.6.1.3-2ubuntu5.2\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libprotobuf-java-3.6.1.3-2ubuntu5.2-esm2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-java",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.12.4-1ubuntu7.22.04.4",
      "fix": "libprotobuf-java 3.12.4-1ubuntu7.22.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libprotobuf-java-3.12.4-1ubuntu7.22.04.4",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-java",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.21.12-8.2ubuntu0.2",
      "fix": "libprotobuf-java 3.21.12-8.2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libprotobuf-java-3.21.12-8.2ubuntu0.2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-java",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "3.21.12-10ubuntu0.1",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libprotobuf-java-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libprotobuf-lite10-3.0.0-9.1ubuntu1.1-esm3",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-lite17",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "libprotobuf-lite17 3.6.1.3-2ubuntu5.2\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libprotobuf-lite17-3.6.1.3-2ubuntu5.2-esm2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-lite23",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libprotobuf-lite23-3.12.4-1ubuntu7.22.04.4",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libprotobuf-lite32t64-3.21.12-8.2ubuntu0.2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf-lite32t64",
      "release": "Ubuntu 25.04 (plucky)",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libprotobuf-lite32t64-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    },
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      "platform": "linux",
      "product": "libprotobuf10",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.0.0-9.1ubuntu1.1\u002Besm3",
      "fix": "libprotobuf10 3.0.0-9.1ubuntu1.1\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libprotobuf10-3.0.0-9.1ubuntu1.1-esm3",
      "released": "2025-06-16T08:15:00Z"
    },
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libprotobuf17-3.6.1.3-2ubuntu5.2-esm2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
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      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "fix": "libprotobuf23 3.12.4-1ubuntu7.22.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libprotobuf23-3.12.4-1ubuntu7.22.04.4",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf32t64",
      "release": "Ubuntu 24.04.5 LTS (noble)",
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      "fix": "libprotobuf32t64 3.21.12-8.2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libprotobuf32t64-3.21.12-8.2ubuntu0.2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libprotobuf32t64",
      "release": "Ubuntu 25.04 (plucky)",
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      "fix": "libprotobuf32t64 3.21.12-10ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libprotobuf32t64-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    },
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      "released": "2025-06-16T08:15:00Z"
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libprotoc17-3.6.1.3-2ubuntu5.2-esm2",
      "released": "2025-06-16T08:15:00Z"
    },
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      "platform": "linux",
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    },
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-php-google-protobuf-3.21.12-8.2ubuntu0.2",
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      "released": "2025-06-16T08:15:00Z"
    },
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      "released": "2025-06-16T08:15:00Z"
    },
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      "released": "2025-06-16T08:15:00Z"
    },
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    },
    {
      "platform": "linux",
      "product": "python3-protobuf",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "3.21.12-10ubuntu0.1",
      "fix": "python3-protobuf 3.21.12-10ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-python3-protobuf-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "ruby-google-protobuf",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.1.3-2ubuntu5.2\u002Besm2",
      "fix": "ruby-google-protobuf 3.6.1.3-2ubuntu5.2\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ruby-google-protobuf-3.6.1.3-2ubuntu5.2-esm2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-google-protobuf",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.12.4-1ubuntu7.22.04.4",
      "fix": "ruby-google-protobuf 3.12.4-1ubuntu7.22.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ruby-google-protobuf-3.12.4-1ubuntu7.22.04.4",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-google-protobuf",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.21.12-8.2ubuntu0.2",
      "fix": "ruby-google-protobuf 3.21.12-8.2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-ruby-google-protobuf-3.21.12-8.2ubuntu0.2",
      "released": "2025-06-16T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-google-protobuf",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "3.21.12-10ubuntu0.1",
      "fix": "ruby-google-protobuf 3.21.12-10ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-ruby-google-protobuf-3.21.12-10ubuntu0.1",
      "released": "2026-01-16T01:42:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}