CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5412 vulnerabilities reference this CWE, most recent first.
GHSA-FWP9-Q76V-G574
Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-03-16 15:30A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".
{
"affected": [],
"aliases": [
"CVE-2026-4174"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-16T14:19:57Z",
"severity": "MODERATE"
},
"details": "A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, \"[he] wont consider this bug a DoS\".",
"id": "GHSA-fwp9-q76v-g574",
"modified": "2026-03-16T15:30:44Z",
"published": "2026-03-16T15:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4174"
},
{
"type": "WEB",
"url": "https://github.com/radareorg/radare2/issues/25482"
},
{
"type": "WEB",
"url": "https://github.com/ToddAWalter/radare2/commit/4371ae84c99c46b48cb21badbbef06b30757aba0"
},
{
"type": "WEB",
"url": "https://github.com/radareorg/radare2/milestone/94"
},
{
"type": "WEB",
"url": "https://github.com/user-attachments/files/25620145/gen_macho_poc.py"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.351081"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.351081"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.769799"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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-FWRG-4QC6-4Q9C
Vulnerability from github – Published: 2022-10-15 12:01 – Updated: 2022-10-18 19:00In sensor driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service in kernel.
{
"affected": [],
"aliases": [
"CVE-2022-39125"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-14T19:15:00Z",
"severity": "MODERATE"
},
"details": "In sensor driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service in kernel.",
"id": "GHSA-fwrg-4qc6-4q9c",
"modified": "2022-10-18T19:00:30Z",
"published": "2022-10-15T12:01:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39125"
},
{
"type": "WEB",
"url": "https://www.unisoc.com/en_us/secy/announcementDetail/1575654905820020738"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FX2X-5JPH-MXXH
Vulnerability from github – Published: 2026-04-03 00:31 – Updated: 2026-04-04 00:31Hirschmann EagleSDV version 05.4.01 prior to 05.4.02 contains a denial-of-service vulnerability that causes the device to crash during session establishment when using TLS 1.0 or TLS 1.1. Attackers can trigger a crash by initiating TLS connections with these protocol versions to disrupt service availability.
{
"affected": [],
"aliases": [
"CVE-2022-4986"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-02T22:16:23Z",
"severity": "HIGH"
},
"details": "Hirschmann EagleSDV version 05.4.01 prior to 05.4.02 contains a denial-of-service vulnerability that causes the device to crash during session establishment when using TLS 1.0 or TLS 1.1. Attackers can trigger a crash by initiating TLS connections with these protocol versions to disrupt service availability.",
"id": "GHSA-fx2x-5jph-mxxh",
"modified": "2026-04-04T00:31:26Z",
"published": "2026-04-03T00:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4986"
},
{
"type": "WEB",
"url": "https://assets.belden.com/m/1c8fe5d916567af6/original/Belden_Security_Bulletin_BSECV-2022-08.pdf"
},
{
"type": "WEB",
"url": "https://www.belden.com/security"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/hirschmann-eaglesdv-denial-of-service-via-tls"
}
],
"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:H/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:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-FX3X-PW2M-9C5P
Vulnerability from github – Published: 2022-03-08 00:00 – Updated: 2022-03-19 00:01IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged trusted host user to exploit a vulnerability in the nimsh daemon to cause a denial of service in the nimsh daemon on another trusted host. IBM X-Force ID: 220396
{
"affected": [],
"aliases": [
"CVE-2022-22351"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-07T17:15:00Z",
"severity": "HIGH"
},
"details": "IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged trusted host user to exploit a vulnerability in the nimsh daemon to cause a denial of service in the nimsh daemon on another trusted host. IBM X-Force ID: 220396",
"id": "GHSA-fx3x-pw2m-9c5p",
"modified": "2022-03-19T00:01:40Z",
"published": "2022-03-08T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-22351"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/220396"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/6561275"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FX47-JPV9-7HXR
Vulnerability from github – Published: 2025-03-20 12:32 – Updated: 2025-03-20 18:57In version 3.23.0 of aimhubio/aim, the ScheduledStatusReporter object can be instantiated to run on the main thread of the tracking server, leading to the main thread being blocked indefinitely. This results in a denial of service as the tracking server becomes unable to respond to other requests.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "aim"
},
"ranges": [
{
"events": [
{
"introduced": "3.15.0"
},
{
"last_affected": "3.23.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-10110"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2025-03-20T18:57:06Z",
"nvd_published_at": "2025-03-20T10:15:14Z",
"severity": "HIGH"
},
"details": "In version 3.23.0 of aimhubio/aim, the ScheduledStatusReporter object can be instantiated to run on the main thread of the tracking server, leading to the main thread being blocked indefinitely. This results in a denial of service as the tracking server becomes unable to respond to other requests.",
"id": "GHSA-fx47-jpv9-7hxr",
"modified": "2025-03-20T18:57:07Z",
"published": "2025-03-20T12:32:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10110"
},
{
"type": "PACKAGE",
"url": "https://github.com/aimhubio/aim"
},
{
"type": "WEB",
"url": "https://github.com/aimhubio/aim/blob/a566d4a2501c96a545a3c89d92af6ad7e7e0da99/aim/sdk/reporter/__init__.py#L789"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/5ea6cf56-7b4c-4dce-9b6c-3e910fbb1ae4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Aim Vulnerable to Denial of Service (DoS)"
}
GHSA-FX4F-94F8-R3JM
Vulnerability from github – Published: 2025-07-29 21:30 – Updated: 2025-07-29 21:30NanoMQ v0.17.9 was discovered to contain a heap use-after-free vulnerability via the component sub_Ctx_handle. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted SUBSCRIBE message.
{
"affected": [],
"aliases": [
"CVE-2024-42651"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-29T19:15:43Z",
"severity": "HIGH"
},
"details": "NanoMQ v0.17.9 was discovered to contain a heap use-after-free vulnerability via the component sub_Ctx_handle. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted SUBSCRIBE message.",
"id": "GHSA-fx4f-94f8-r3jm",
"modified": "2025-07-29T21:30:43Z",
"published": "2025-07-29T21:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42651"
},
{
"type": "WEB",
"url": "https://github.com/nanomq/nanomq/issues/1217"
},
{
"type": "WEB",
"url": "https://github.com/nanomq/nanomq"
},
{
"type": "WEB",
"url": "https://github.com/songxpu/bug_report/blob/master/MQTT/NanoMQ/CVE-2024-42651.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-FX8R-HF6C-5P46
Vulnerability from github – Published: 2022-06-21 00:00 – Updated: 2022-06-29 00:00Denial of Service in GitHub repository inventree/inventree prior to 0.8.0.
{
"affected": [],
"aliases": [
"CVE-2022-2134"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-20T15:15:00Z",
"severity": "MODERATE"
},
"details": "Denial of Service in GitHub repository inventree/inventree prior to 0.8.0.",
"id": "GHSA-fx8r-hf6c-5p46",
"modified": "2022-06-29T00:00:29Z",
"published": "2022-06-21T00:00:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2134"
},
{
"type": "WEB",
"url": "https://github.com/inventree/inventree/commit/63b4ff3eb6e80861962fafe79c9b483cd7239d6c"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/57b0f272-a97f-4cb3-b546-c863c68a561a"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FX92-P77R-3R2C
Vulnerability from github – Published: 2022-05-24 19:02 – Updated: 2022-09-21 00:00A flaw was found in libwebp in versions before 1.0.1. When reading a file libwebp allocates an excessive amount of memory. The highest threat from this vulnerability is to the service availability.
{
"affected": [],
"aliases": [
"CVE-2020-36332"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-21T17:15:00Z",
"severity": "HIGH"
},
"details": "A flaw was found in libwebp in versions before 1.0.1. When reading a file libwebp allocates an excessive amount of memory. The highest threat from this vulnerability is to the service availability.",
"id": "GHSA-fx92-p77r-3r2c",
"modified": "2022-09-21T00:00:37Z",
"published": "2022-05-24T19:02:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36332"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1956868"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20211104-0004"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4930"
}
],
"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-FXRC-HG6J-6V3X
Vulnerability from github – Published: 2022-12-13 15:30 – Updated: 2022-12-13 19:24hutool-json v5.8.10 was discovered to contain an out of memory error. This issue is similar to CVE-2022-45690.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "cn.hutool:hutool-json"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.8.10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-45689"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2022-12-13T19:24:59Z",
"nvd_published_at": "2022-12-13T15:15:00Z",
"severity": "LOW"
},
"details": "hutool-json v5.8.10 was discovered to contain an out of memory error. This issue is similar to CVE-2022-45690.",
"id": "GHSA-fxrc-hg6j-6v3x",
"modified": "2022-12-13T19:24:59Z",
"published": "2022-12-13T15:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-45689"
},
{
"type": "WEB",
"url": "https://github.com/dromara/hutool/issues/2747"
},
{
"type": "PACKAGE",
"url": "https://github.com/dromara/hutool"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "hutool-json vulnerable to memory exhaustion"
}
GHSA-G23V-P5JQ-JVH4
Vulnerability from github – Published: 2022-01-06 18:37 – Updated: 2021-06-24 13:23A vulnerability in the JsonMapObjectReaderWriter of Apache CXF allows an attacker to submit malformed JSON to a web service, which results in the thread getting stuck in an infinite loop, consuming CPU indefinitely. This issue affects Apache CXF versions prior to 3.4.4; Apache CXF versions prior to 3.3.11.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:apache-cxf"
},
"ranges": [
{
"events": [
{
"introduced": "3.4.0"
},
{
"fixed": "3.4.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:apache-cxf"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.11"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:cxf"
},
"ranges": [
{
"events": [
{
"introduced": "3.4.0"
},
{
"fixed": "3.4.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.cxf:cxf"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-30468"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-835"
],
"github_reviewed": true,
"github_reviewed_at": "2021-06-17T18:54:46Z",
"nvd_published_at": "2021-06-16T12:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the JsonMapObjectReaderWriter of Apache CXF allows an attacker to submit malformed JSON to a web service, which results in the thread getting stuck in an infinite loop, consuming CPU indefinitely. This issue affects Apache CXF versions prior to 3.4.4; Apache CXF versions prior to 3.3.11.",
"id": "GHSA-g23v-p5jq-jvh4",
"modified": "2021-06-24T13:23:03Z",
"published": "2022-01-06T18:37:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30468"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r3f46ae38e4a6e80c069cdb320e0ce831b0a21a12ef0cc92c0943f34a@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4771084730c4cf6e59eda60b4407122c86f174eb750b24f610ba9ff4@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4a4b6bc0520b69c18d2a59daa6af84ae49f0c22164dccb8538794459@%3Cannounce.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4a4b6bc0520b69c18d2a59daa6af84ae49f0c22164dccb8538794459@%3Cdev.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r4a4b6bc0520b69c18d2a59daa6af84ae49f0c22164dccb8538794459@%3Cusers.cxf.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r54c0f1cbbb9f381dfbedb9ea5e90ecb1c0a15371f40c4b10322ac737@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/ra833f78b3fa577cb43558cf343859a1bf70b1c5ce2353b3877d96422@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rac07822057521dccf33ab5d136e0e8c599a6e2c8ac75e44ffbdc6e07@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/re5b2a2b77faa22684d47bd2ac6623135c615565328ff40a1ec705448@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/re9e05c6cab5f0dcc827eba4e6fcf26fa0b493e7ca84d62c867a80d03@%3Ccommits.tomee.apache.org%3E"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210917-0002"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"type": "WEB",
"url": "http://cxf.apache.org/security-advisories.data/CVE-2021-30468.txt.asc"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2021/06/16/2"
}
],
"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"
}
],
"summary": "Infinite loop in Apache CFX"
}
Mitigation
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
- 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
Ensure that protocols have specific limits of scale placed on them.
Mitigation
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.