{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "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"
      },
      {
        "category": "details",
        "text": "Fix CVE-2025-46727: limit number and bytesize of query parameters in bundled\n  rubygem rack\n- Fix CVE-2025-61919: bound the read of urlencoded request bodies in bundled\n  rubygem rack\n- Fix CVE-2025-61771: limit multipart data retained in memory in bundled\n  rubygem rack\n- Fix CVE-2025-61772: limit the multipart part header size in bundled\n  rubygem rack\n- Skip the pcs tests that need pacemaker >= 1.1.23 when the build root has\n  an older one (CloudLinux 7)",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos7els/advisories/2026/clsa-2026_1792688174.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-10-26T14:23:26Z",
      "generator": {
        "date": "2026-10-26T14:23:26Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1792688174",
      "initial_release_date": "2026-10-22T16:56:15Z",
      "revision_history": [
        {
          "date": "2026-10-22T16:56:15Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-26T14:23:26Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "pcs: Fix of 4 CVEs"
  },
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                  "product_id": "CentOS-7",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*"
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        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
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        "relates_to_product_reference": "CentOS-7"
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        },
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        "relates_to_product_reference": "CentOS-7"
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        },
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        "relates_to_product_reference": "CentOS-7"
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    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-61919",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, `Rack::Request#POST` reads the entire request body into memory for `Content-Type: application/x-www-form-urlencoded`, calling `rack.input.read(nil)` without enforcing a length or cap. Large request bodies can therefore be buffered completely into process memory before parsing, leading to denial of service (DoS) through memory exhaustion. Users should upgrade to Rack version 2.2.20, 3.1.18, or 3.2.3, anu of which enforces form parameter limits using `query_parser.bytesize_limit`, preventing unbounded reads of `application/x-www-form-urlencoded` bodies. Additionally, enforce strict maximum body size at the proxy or web server layer (e.g., Nginx `client_max_body_size`, Apache `LimitRequestBody`).",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-61919"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/4e2c903991a790ee211a3021808ff4fd6fe82881",
          "url": "https://github.com/rack/rack/commit/4e2c903991a790ee211a3021808ff4fd6fe82881"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/cbd541e8a3d0c5830a3c9a30d3718ce2e124f9db",
          "url": "https://github.com/rack/rack/commit/cbd541e8a3d0c5830a3c9a30d3718ce2e124f9db"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/e179614c4a653283286f5f046428cbb85f21146f",
          "url": "https://github.com/rack/rack/commit/e179614c4a653283286f5f046428cbb85f21146f"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/security/advisories/GHSA-6xw4-3v39-52mm",
          "url": "https://github.com/rack/rack/security/advisories/GHSA-6xw4-3v39-52mm"
        }
      ],
      "release_date": "2025-10-10T20:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-22T16:56:15.728427Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174",
          "product_ids": [
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2025-61772",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` can accumulate unbounded data when a multipart part’s header block never terminates with the required blank line (`CRLFCRLF`). The parser keeps appending incoming bytes to memory without a size cap, allowing a remote attacker to exhaust memory and cause a denial of service (DoS). Attackers can send incomplete multipart headers to trigger high memory use, leading to process termination (OOM) or severe slowdown. The effect scales with request size limits and concurrency. All applications handling multipart uploads may be affected. Versions 2.2.19, 3.1.17, and 3.2.2 cap per-part header size (e.g., 64 KiB). As a workaround, restrict maximum request sizes at the proxy or web server layer (e.g., Nginx `client_max_body_size`).",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-61772"
        },
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        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/security/advisories/GHSA-wpv5-97wm-hp9c",
          "url": "https://github.com/rack/rack/security/advisories/GHSA-wpv5-97wm-hp9c"
        }
      ],
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-22T16:56:15.728427Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174",
          "product_ids": [
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    },
    {
      "cve": "CVE-2025-61771",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, ``Rack::Multipart::Parser` stores non-file form fields (parts without a `filename`) entirely in memory as Ruby `String` objects. A single large text field in a multipart/form-data request (hundreds of megabytes or more) can consume equivalent process memory, potentially leading to out-of-memory (OOM) conditions and denial of service (DoS). Attackers can send large non-file fields to trigger excessive memory usage. Impact scales with request size and concurrency, potentially leading to worker crashes or severe garbage-collection overhead. All Rack applications processing multipart form submissions are affected. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a reasonable size cap for non-file fields (e.g., 2 MiB). Workarounds include restricting maximum request body size at the web-server or proxy layer (e.g., Nginx `client_max_body_size`) and validating and rejecting unusually large form fields at the application level.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
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          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-61771"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/589127f4ac8b5cf11cf88fb0cd116ffed4d2181e",
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        },
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          "summary": "https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd",
          "url": "https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/security/advisories/GHSA-w9pc-fmgc-vxvw",
          "url": "https://github.com/rack/rack/security/advisories/GHSA-w9pc-fmgc-vxvw"
        }
      ],
      "release_date": "2025-10-07T15:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-22T16:56:15.728427Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174",
          "product_ids": [
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2025-46727",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "category": "description",
          "text": "Rack is a modular Ruby web server interface. Prior to versions 2.2.14, 3.0.16, and 3.1.14, `Rack::QueryParser` parses query strings and `application/x-www-form-urlencoded` bodies into Ruby data structures without imposing any limit on the number of parameters, allowing attackers to send requests with extremely large numbers of parameters. The vulnerability arises because `Rack::QueryParser` iterates over each `&`-separated key-value pair and adds it to a Hash without enforcing an upper bound on the total number of parameters. This allows an attacker to send a single request containing hundreds of thousands (or more) of parameters, which consumes excessive memory and CPU during parsing. An attacker can trigger denial of service by sending specifically crafted HTTP requests, which can cause memory exhaustion or pin CPU resources, stalling or crashing the Rack server. This results in full service disruption until the affected worker is restarted. Versions 2.2.14, 3.0.16, and 3.1.14 fix the issue. Some other mitigations are available. One may use middleware to enforce a maximum query string size or parameter count, or employ a reverse proxy (such as Nginx) to limit request sizes and reject oversized query strings or bodies. Limiting request body sizes and query string lengths at the web server or CDN level is an effective mitigation.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
          "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
          "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2025-46727"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/2bb5263b464b65ba4b648996a579dbd180d2b712",
          "url": "https://github.com/rack/rack/commit/2bb5263b464b65ba4b648996a579dbd180d2b712"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/3f5a4249118d09d199fe480466c8c6717e43b6e3",
          "url": "https://github.com/rack/rack/commit/3f5a4249118d09d199fe480466c8c6717e43b6e3"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/commit/cd6b70a1f2a1016b73dc906f924869f4902c2d74",
          "url": "https://github.com/rack/rack/commit/cd6b70a1f2a1016b73dc906f924869f4902c2d74"
        },
        {
          "category": "external",
          "summary": "https://github.com/rack/rack/security/advisories/GHSA-gjh7-p2fx-99vx",
          "url": "https://github.com/rack/rack/security/advisories/GHSA-gjh7-p2fx-99vx"
        }
      ],
      "release_date": "2025-05-07T23:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-22T16:56:15.728427Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174",
          "product_ids": [
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.aarch64",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.i686",
            "CentOS-7:pcs-snmp-0:0.9.169-3.0.1.el7_9.3.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792688174"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}