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.

5531 vulnerabilities reference this CWE, most recent first.

GHSA-2797-489C-67FQ

Vulnerability from github – Published: 2022-05-24 16:51 – Updated: 2024-04-04 01:24
VLAI
Details

Imgix through 2019-06-19 allows remote attackers to cause a denial of service (resource consumption) by manipulating a small JPEG file to specify dimensions of 64250x64250 pixels, which is mishandled during an attempt to load the 'whole image' into memory.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2019-13655"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-07-29T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Imgix through 2019-06-19 allows remote attackers to cause a denial of service (resource consumption) by manipulating a small JPEG file to specify dimensions of 64250x64250 pixels, which is mishandled during an attempt to load the \u0027whole image\u0027 into memory.",
  "id": "GHSA-2797-489c-67fq",
  "modified": "2024-04-04T01:24:27Z",
  "published": "2022-05-24T16:51:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13655"
    },
    {
      "type": "WEB",
      "url": "https://obsidianterminal.blogspot.com/2019/07/dos-in-imgix-cdns-image-processing.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-27FQ-8XXM-GQGW

Vulnerability from github – Published: 2026-01-17 18:30 – Updated: 2026-02-23 09:31
VLAI
Details

A security flaw has been discovered in Open5GS up to 2.7.5. This issue affects some unknown processing of the component Timer Handler. The manipulation results in resource consumption. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The patch is identified as c7c131f8d2cb1195ada5e0e691b6868ebcd8a845. It is best practice to apply a patch to resolve this issue.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-15532"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-404"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-17T17:15:47Z",
    "severity": "MODERATE"
  },
  "details": "A security flaw has been discovered in Open5GS up to 2.7.5. This issue affects some unknown processing of the component Timer Handler. The manipulation results in resource consumption. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The patch is identified as c7c131f8d2cb1195ada5e0e691b6868ebcd8a845. It is best practice to apply a patch to resolve this issue.",
  "id": "GHSA-27fq-8xxm-gqgw",
  "modified": "2026-02-23T09:31:20Z",
  "published": "2026-01-17T18:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15532"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open5gs/open5gs/issues/4220"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open5gs/open5gs/issues/4220#issue-3766066853"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open5gs/open5gs/issues/4221"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open5gs/open5gs/commit/c7c131f8d2cb1195ada5e0e691b6868ebcd8a845"
    },
    {
      "type": "WEB",
      "url": "https://github.com/open5gs/open5gs"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.341599"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.341599"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.729354"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.729357"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.735340"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.735341"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.735342"
    }
  ],
  "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"
    },
    {
      "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/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:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-27PV-9QXJ-GFJ6

Vulnerability from github – Published: 2022-05-24 17:20 – Updated: 2022-05-24 17:20
VLAI
Details

In RTTTL_Event of eas_rtttl.c, there is possible resource exhaustion due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-123700383

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-0169"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-06-11T15:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In RTTTL_Event of eas_rtttl.c, there is possible resource exhaustion due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-123700383",
  "id": "GHSA-27pv-9qxj-gfj6",
  "modified": "2022-05-24T17:20:13Z",
  "published": "2022-05-24T17:20:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0169"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2020-06-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-27R4-945X-JQ67

Vulnerability from github – Published: 2024-11-20 00:32 – Updated: 2024-11-23 03:31
VLAI
Details

In removeUnsynchronization of ID3.cpp there is a possible resource exhaustion due to improper input validation. This could lead to denial of service with no additional execution privileges needed. User interaction is needed for exploitation.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-9412"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-19T22:15:18Z",
    "severity": "MODERATE"
  },
  "details": "In removeUnsynchronization of ID3.cpp there is a possible resource exhaustion due to improper input validation. This could lead to denial of service with no additional execution privileges needed. User interaction is needed for exploitation.",
  "id": "GHSA-27r4-945x-jq67",
  "modified": "2024-11-23T03:31:57Z",
  "published": "2024-11-20T00:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-9412"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/2018-07-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-27W5-GJ5Q-82FV

Vulnerability from github – Published: 2025-09-30 12:30 – Updated: 2025-10-03 18:26
VLAI
Summary
@nubosoftware/node-static failure to catch exception can result in server crash
Details

This affects all versions of the package node-static; all versions of the package @nubosoftware/node-static. The package fails to catch an exception when user input includes null bytes. This allows attackers to access http://host/%00 and crash the server.

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@nubosoftware/node-static"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.7.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-11149"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-30T21:24:44Z",
    "nvd_published_at": "2025-09-30T11:37:39Z",
    "severity": "HIGH"
  },
  "details": "This affects all versions of the package node-static; all versions of the package @nubosoftware/node-static. The package fails to catch an exception when user input includes null bytes. This allows attackers to access http://host/%00 and crash the server.",
  "id": "GHSA-27w5-gj5q-82fv",
  "modified": "2025-10-03T18:26:44Z",
  "published": "2025-09-30T12:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11149"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/pull/6248"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cloudhead/node-static/commit/78879dc665f0f7137063794b6e0b6203a81c7f67"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cloudhead/node-static"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-NODESTATIC-1297183"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-NUBOSOFTWARENODESTATIC-3330728"
    }
  ],
  "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"
    }
  ],
  "summary": "@nubosoftware/node-static failure to catch exception can result in server crash"
}

GHSA-27XG-FW4V-JGV6

Vulnerability from github – Published: 2026-06-25 12:32 – Updated: 2026-06-25 12:32
VLAI
Details

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-42005"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T12:16:47Z",
    "severity": "MODERATE"
  },
  "details": "An attacker can send a web request that causes unlimited memory \nallocation in the internal web server, leading to a denial of service. \nThe internal web server is disabled by default.",
  "id": "GHSA-27xg-fw4v-jgv6",
  "modified": "2026-06-25T12:32:11Z",
  "published": "2026-06-25T12:32:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42005"
    },
    {
      "type": "WEB",
      "url": "https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html"
    }
  ],
  "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-2828-9VH6-9M6J

Vulnerability from github – Published: 2020-08-21 16:25 – Updated: 2024-11-18 22:40
VLAI
Summary
Client Denial of Service on TUF
Details

Impact

An attacker who can gain file access to the repository and modify metadata files may cause a denial of service to clients by creating many invalid signatures on a metadata file. Having a large number of signatures to verify will delay the moment when the client will determine the signature is not valid. This delay may be for at least a few minutes, but possibly could be longer especially if multiple files are impacted.

The tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.

Patches

No fix exists for this issue.

Workarounds

No workarounds are known for this issue.

References

Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tuf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.7.2"
            },
            {
              "fixed": "0.12.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-6173"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-21T16:19:09Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nAn attacker who can gain file access to the repository and modify metadata files may cause a denial of service to clients by creating many invalid signatures on a metadata file. Having a large number of signatures to verify will delay the moment when the client will determine the signature is not valid. This delay may be for at least a few minutes, but possibly could be longer especially if multiple files are impacted.\n\nThe tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.\n\n### Patches\nNo fix exists for this issue. \n\n### Workarounds\nNo workarounds are known for this issue.\n\n### References\n* [CVE-2020-6173](https://nvd.nist.gov/vuln/detail/CVE-2020-6173)\n* [Issue #973](https://github.com/theupdateframework/tuf/issues/973)",
  "id": "GHSA-2828-9vh6-9m6j",
  "modified": "2024-11-18T22:40:00Z",
  "published": "2020-08-21T16:25:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/security/advisories/GHSA-2828-9vh6-9m6j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6173"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/issues/973"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tuf/PYSEC-2020-146.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/theupdateframework/tuf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/commits/develop"
    }
  ],
  "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"
    },
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Client Denial of Service on TUF"
}

GHSA-283W-JXHF-PMRJ

Vulnerability from github – Published: 2025-09-16 21:31 – Updated: 2025-09-17 18:31
VLAI
Details

The /api/comment endpoint in zhangyd-c OneBlog 2.3.9 contains a denial-of-service vulnerability.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-56264"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T20:15:36Z",
    "severity": "HIGH"
  },
  "details": "The /api/comment endpoint in zhangyd-c OneBlog 2.3.9 contains a denial-of-service vulnerability.",
  "id": "GHSA-283w-jxhf-pmrj",
  "modified": "2025-09-17T18:31:17Z",
  "published": "2025-09-16T21:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-56264"
    },
    {
      "type": "WEB",
      "url": "https://github.com/echo0d/vulnerability/blob/main/zhangyd-c_OneBlog/DoS.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-28J9-FQ4C-QRQG

Vulnerability from github – Published: 2024-06-13 00:31 – Updated: 2024-06-13 00:31
VLAI
Details

An issue has been discovered in GitLab CE/EE affecting all versions prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. A vulnerability in GitLab's CI/CD pipeline editor could allow for denial of service attacks through maliciously crafted configuration files.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-1736"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-12T23:15:49Z",
    "severity": "MODERATE"
  },
  "details": "An issue has been discovered in GitLab CE/EE affecting all versions prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. A vulnerability in GitLab\u0027s CI/CD pipeline editor could allow for denial of service attacks through maliciously crafted configuration files.",
  "id": "GHSA-28j9-fq4c-qrqg",
  "modified": "2024-06-13T00:31:23Z",
  "published": "2024-06-13T00:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1736"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/2358689"
    },
    {
      "type": "WEB",
      "url": "https://about.gitlab.com/releases/2024/06/12/patch-release-gitlab-17-0-2-released/#redos-in-ci-interpolation-fix-bypass"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/442695"
    }
  ],
  "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-295X-89H7-9WPM

Vulnerability from github – Published: 2025-06-22 21:30 – Updated: 2025-06-22 21:30
VLAI
Details

A vulnerability has been found in MarkText up to 0.17.1 and classified as problematic. Affected by this vulnerability is the function getRecommendTitleFromMarkdownString of the file marktext/src/main/utils/index.js. The manipulation leads to inefficient regular expression complexity. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-6492"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-22T20:15:19Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability has been found in MarkText up to 0.17.1 and classified as problematic. Affected by this vulnerability is the function getRecommendTitleFromMarkdownString of the file marktext/src/main/utils/index.js. The manipulation leads to inefficient regular expression complexity. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.",
  "id": "GHSA-295x-89h7-9wpm",
  "modified": "2025-06-22T21:30:27Z",
  "published": "2025-06-22T21:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6492"
    },
    {
      "type": "WEB",
      "url": "https://github.com/marktext/marktext/pull/3952"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mmmsssttt404/marktext/blob/c59b3ad423dfa082869933baf9f5d5c69bdcc560/test/unit/specs/match-electron-accelerator.spec.js#L155-L164"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.313609"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.313609"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.598208"
    }
  ],
  "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"
    },
    {
      "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/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:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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.