Common Weakness Enumeration

CWE-400

Discouraged

Uncontrolled Resource Consumption

Abstraction: Class · Status: Draft

The product does not properly control the allocation and maintenance of a limited resource.

5521 vulnerabilities reference this CWE, most recent first.

GHSA-2FJV-FFR6-WH68

Vulnerability from github – Published: 2024-06-24 21:33 – Updated: 2025-10-15 18:31
VLAI
Details

Adminer and AdminerEvo allow an unauthenticated remote attacker to cause a denial of service by connecting to an attacker-controlled service that responds with HTTP redirects. The denial of service is subject to PHP configuration limits. Adminer is no longer supported, but this issue was fixed in AdminerEvo version 4.8.4.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-45196"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-24T21:15:25Z",
    "severity": "MODERATE"
  },
  "details": "Adminer and AdminerEvo allow an unauthenticated remote attacker to cause a denial of service by connecting to an attacker-controlled service that responds with HTTP redirects. The denial of service is subject to PHP configuration limits.\u00a0Adminer is no longer supported, but this issue was fixed in AdminerEvo version 4.8.4.",
  "id": "GHSA-2fjv-ffr6-wh68",
  "modified": "2025-10-15T18:31:47Z",
  "published": "2024-06-24T21:33:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45196"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adminerevo/adminerevo/pull/102/commits/23e7cdc0a32b3739e13d19ae504be0fe215142b6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-2FPQ-JHJC-VQFV

Vulnerability from github – Published: 2021-12-08 00:01 – Updated: 2021-12-08 00:01
VLAI
Details

A vulnerability found in UniFi Switch firmware Version 5.43.35 and earlier allows a malicious actor who has already gained access to the network to perform a Deny of Service (DoS) attack on the affected switch.This vulnerability is fixed in UniFi Switch firmware 5.76.6 and later.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-44527"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-07T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability found in UniFi Switch firmware Version 5.43.35 and earlier allows a malicious actor who has already gained access to the network to perform a Deny of Service (DoS) attack on the affected switch.This vulnerability is fixed in UniFi Switch firmware 5.76.6 and later.",
  "id": "GHSA-2fpq-jhjc-vqfv",
  "modified": "2021-12-08T00:01:28Z",
  "published": "2021-12-08T00:01:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44527"
    },
    {
      "type": "WEB",
      "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-022-022/cd83c01b-33e4-454a-b3b9-1c3ccebea7cb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-2FXF-G7GX-J9PR

Vulnerability from github – Published: 2025-04-15 21:31 – Updated: 2025-04-15 21:31
VLAI
Details

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is 7.1.6. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox as well as unauthorized update, insert or delete access to some of Oracle VM VirtualBox accessible data and unauthorized read access to a subset of Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H).

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-30725"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-15T21:16:02Z",
    "severity": "MODERATE"
  },
  "details": "Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core).   The supported version that is affected is 7.1.6. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox.  While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle VM VirtualBox as well as  unauthorized update, insert or delete access to some of Oracle VM VirtualBox accessible data and  unauthorized read access to a subset of Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H).",
  "id": "GHSA-2fxf-g7gx-j9pr",
  "modified": "2025-04-15T21:31:48Z",
  "published": "2025-04-15T21:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30725"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2025.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2G3X-JGF5-XM96

Vulnerability from github – Published: 2024-09-30 09:30 – Updated: 2024-09-30 09:30
VLAI
Details

The swctrl service is used to detect and remotely manage PLANET Technology devices. Certain switch models have a Denial-of-Service vulnerability in the swctrl service, allowing unauthenticated remote attackers to send crafted packets that can crash the service.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-8454"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-30T08:15:04Z",
    "severity": "MODERATE"
  },
  "details": "The swctrl service is used to detect and remotely manage PLANET Technology devices. Certain switch models have a Denial-of-Service vulnerability in the swctrl service, allowing unauthenticated remote attackers to send crafted packets that can crash the service.",
  "id": "GHSA-2g3x-jgf5-xm96",
  "modified": "2024-09-30T09:30:47Z",
  "published": "2024-09-30T09:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8454"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/en/cp-139-8058-cc391-2.html"
    },
    {
      "type": "WEB",
      "url": "https://www.twcert.org.tw/tw/cp-132-8057-1b3fa-1.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2G4F-4PWH-QVX6

Vulnerability from github – Published: 2026-02-11 21:30 – Updated: 2026-03-02 21:58
VLAI
Summary
ajv has ReDoS when using `$data` option
Details

ajv (Another JSON Schema Validator) through version 8.17.1 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., \"^(a|a)*$\") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ajv"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0-alpha.0"
            },
            {
              "fixed": "8.18.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ajv"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.14.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-69873"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-17T16:38:57Z",
    "nvd_published_at": "2026-02-11T19:15:50Z",
    "severity": "MODERATE"
  },
  "details": "ajv (Another JSON Schema Validator) through version 8.17.1 is vulnerable to Regular Expression Denial of Service (ReDoS) when the `$data` option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax (`$data` reference), which is passed directly to the JavaScript `RegExp()` constructor without validation. An attacker can inject a malicious regex pattern (e.g., `\\\"^(a|a)*$\\\"`) combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with `$data`: true for dynamic schema validation.",
  "id": "GHSA-2g4f-4pwh-qvx6",
  "modified": "2026-03-02T21:58:39Z",
  "published": "2026-02-11T21:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69873"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/pull/2586"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/pull/2588"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/pull/2590"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/pull/6991"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/commit/720a23fa453ffae8340e92c9b0fe886c54cfe0d5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv-ReDoS.md"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2g4f-4pwh-qvx6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ajv-validator/ajv"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/releases/tag/v6.14.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ajv-validator/ajv/releases/tag/v8.18.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ajv has ReDoS when using `$data` option"
}

GHSA-2G5R-H37M-8972

Vulnerability from github – Published: 2023-09-19 15:30 – Updated: 2024-03-21 03:35
VLAI
Details

** UNSUPPPORTED WHEN ASSIGNED ** Uncontrolled resource consumption in ekorRCI, allowing an attacker with low-privileged access to the web server to send continuous legitimate web requests to a functionality that is not properly validated, in order to cause a denial of service (DoS) on the device.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-47556"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-09-19T13:16:20Z",
    "severity": "MODERATE"
  },
  "details": "** UNSUPPPORTED WHEN ASSIGNED ** Uncontrolled resource consumption in ekorRCI, allowing an attacker with low-privileged access to the web server to send continuous legitimate web requests to a functionality that is not properly validated, in order to cause a denial of service (DoS) on the device.",
  "id": "GHSA-2g5r-h37m-8972",
  "modified": "2024-03-21T03:35:47Z",
  "published": "2023-09-19T15:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47556"
    },
    {
      "type": "WEB",
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-ormazabal-products"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2G9G-66PP-8RQ7

Vulnerability from github – Published: 2024-04-11 06:30 – Updated: 2024-07-03 18:34
VLAI
Details

An issue was discovered in OpenDDS commit b1c534032bb62ad4ae32609778de6b8d6c823a66, allows a local attacker to cause a denial of service and obtain sensitive information via the max_samples parameter within the DataReaderQoS component.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-30915"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-11T06:15:06Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in OpenDDS commit b1c534032bb62ad4ae32609778de6b8d6c823a66, allows a local attacker to cause a denial of service and obtain sensitive information via the max_samples parameter within the DataReaderQoS component.",
  "id": "GHSA-2g9g-66pp-8rq7",
  "modified": "2024-07-03T18:34:17Z",
  "published": "2024-04-11T06:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30915"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OpenDDS/OpenDDS/issues/4527"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2GM5-WC63-C2PC

Vulnerability from github – Published: 2026-07-16 00:31 – Updated: 2026-07-16 21:30
VLAI
Details

An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-36590"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-15T22:16:46Z",
    "severity": "HIGH"
  },
  "details": "An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component",
  "id": "GHSA-2gm5-wc63-c2pc",
  "modified": "2026-07-16T21:30:33Z",
  "published": "2026-07-16T00:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-36590"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MoXie25/NanoMQ-Memory-Leak-Research.git"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MoXie25/NanoMQ-Memory-Leak-Research/blob/main/README.md"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2GPJ-6WGQ-8636

Vulnerability from github – Published: 2022-05-24 17:18 – Updated: 2024-04-26 09:30
VLAI
Details

Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-12667"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-05-19T13:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an \"NXNSAttack\" issue. This is triggered by random subdomains in the NSDNAME in NS records.",
  "id": "GHSA-2gpj-6wgq-8636",
  "modified": "2024-04-26T09:30:33Z",
  "published": "2022-05-24T17:18:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12667"
    },
    {
      "type": "WEB",
      "url": "https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/76Y4FITMOH6RVPWAANGV7NB2ZHPJJGDQ"
    },
    {
      "type": "WEB",
      "url": "https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html"
    },
    {
      "type": "WEB",
      "url": "http://cyber-security-group.cs.tau.ac.il/#"
    },
    {
      "type": "WEB",
      "url": "http://www.nxnsattack.com"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2020/05/19/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2GPR-J5VJ-WVH2

Vulnerability from github – Published: 2023-07-05 09:30 – Updated: 2023-07-12 15:48
VLAI
Summary
Apache Any23 vulnerable to excessive memory usage
Details

Use of TikaEncodingDetector in Apache Any23 can cause excessive memory usage.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.any23:apache-any23"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-34150"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-06T20:37:32Z",
    "nvd_published_at": "2023-07-05T08:15:09Z",
    "severity": "MODERATE"
  },
  "details": "Use of TikaEncodingDetector in Apache Any23 can cause excessive memory usage.",
  "id": "GHSA-2gpr-j5vj-wvh2",
  "modified": "2023-07-12T15:48:59Z",
  "published": "2023-07-05T09:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-34150"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/any23"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/713tk23khbtbg940pb2ql8ggd4cvh6j1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Any23 vulnerable to excessive memory usage"
}

Mitigation
Architecture and Design

Design throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.

Mitigation
Architecture and Design
  • Mitigation of resource exhaustion attacks requires that the target system either:
  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
  • The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
  • recognizes the attack and denies that user further access for a given amount of time, or
  • uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
Mitigation
Architecture and Design

Ensure that protocols have specific limits of scale placed on them.

Mitigation
Implementation

Ensure that all failures in resource allocation place the system into a safe posture.

CAPEC-147: XML Ping of the Death

An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.

CAPEC-227: Sustained Client Engagement

An adversary attempts to deny legitimate users access to a resource by continually engaging a specific resource in an attempt to keep the resource tied up as long as possible. The adversary's primary goal is not to crash or flood the target, which would alert defenders; rather it is to repeatedly perform actions or abuse algorithmic flaws such that a given resource is tied up and not available to a legitimate user. By carefully crafting a requests that keep the resource engaged through what is seemingly benign requests, legitimate users are limited or completely denied access to the resource.

CAPEC-492: Regular Expression Exponential Blowup

An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.