CWE-400
DiscouragedUncontrolled 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-6MPQ-5WJJ-48JG
Vulnerability from github – Published: 2023-08-22 21:30 – Updated: 2024-04-04 07:05Control Channel in OpenVPN 2.4.7 and earlier allows remote attackers to cause a denial of service via crafted reset packet.
{
"affected": [],
"aliases": [
"CVE-2020-20813"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-22T19:16:08Z",
"severity": "HIGH"
},
"details": "Control Channel in OpenVPN 2.4.7 and earlier allows remote attackers to cause a denial of service via crafted reset packet.",
"id": "GHSA-6mpq-5wjj-48jg",
"modified": "2024-04-04T07:05:45Z",
"published": "2023-08-22T21:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-20813"
},
{
"type": "WEB",
"url": "https://www.freebuf.com/vuls/215171.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:H",
"type": "CVSS_V3"
}
]
}
GHSA-6MPR-24PX-GQ7M
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2023-01-19 18:30A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The vulnerability allows a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality and integrity of files on the system.
{
"affected": [],
"aliases": [
"CVE-2019-14901"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-11-29T15:15:00Z",
"severity": "HIGH"
},
"details": "A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The vulnerability allows a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality and integrity of files on the system.",
"id": "GHSA-6mpr-24px-gq7m",
"modified": "2023-01-19T18:30:22Z",
"published": "2022-05-24T17:02:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14901"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4228-2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4228-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4227-2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4227-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4226-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4225-2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4225-1"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MN6MLCN7G7VFTSXSZYXKXEFCUMFBUAXQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D4ISVNIC44SOGXTUBCIZFSUNQJ5LRKNZ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MN6MLCN7G7VFTSXSZYXKXEFCUMFBUAXQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4ISVNIC44SOGXTUBCIZFSUNQJ5LRKNZ"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14901"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1773519"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2019-14901"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:1493"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0375"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0374"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0339"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0328"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0204"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/155879/Kernel-Live-Patch-Security-Notice-LSN-0061-1.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/156185/Kernel-Live-Patch-Security-Notice-LSN-0062-1.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6MV9-JVM8-G7RQ
Vulnerability from github – Published: 2023-08-15 00:31 – Updated: 2024-04-04 06:57In setMediaButtonBroadcastReceiver of MediaSessionRecord.java, there is a possible permanent DoS due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2023-21280"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-14T22:15:13Z",
"severity": "MODERATE"
},
"details": "In setMediaButtonBroadcastReceiver of MediaSessionRecord.java, there is a possible permanent DoS due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.\n\n",
"id": "GHSA-6mv9-jvm8-g7rq",
"modified": "2024-04-04T06:57:02Z",
"published": "2023-08-15T00:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21280"
},
{
"type": "WEB",
"url": "https://android.googlesource.com/platform/frameworks/base/+/06e772e05514af4aa427641784c5eec39a892ed3"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2023-08-01"
}
],
"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-6MX3-9QFH-77GJ
Vulnerability from github – Published: 2024-02-29 09:30 – Updated: 2025-01-10 18:32Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "9.3.0"
},
{
"fixed": "9.3.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost/server/v8"
},
"ranges": [
{
"events": [
{
"introduced": "9.2.0"
},
{
"fixed": "9.2.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-24988"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-02-29T22:48:30Z",
"nvd_published_at": "2024-02-29T08:15:47Z",
"severity": "MODERATE"
},
"details": "Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send\u00a0multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.\n\n",
"id": "GHSA-6mx3-9qfh-77gj",
"modified": "2025-01-10T18:32:25Z",
"published": "2024-02-29T09:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-24988"
},
{
"type": "PACKAGE",
"url": "https://github.com/mattermost/mattermost"
},
{
"type": "WEB",
"url": "https://mattermost.com/security-updates"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Mattermost denial of service through long emoji value"
}
GHSA-6MXG-4M6J-9XH2
Vulnerability from github – Published: 2025-03-25 21:31 – Updated: 2025-03-26 15:32In NASA cFS (Core Flight System) Aquila, it is possible to put the onboard software in a state that will prevent the launch of any external application, causing a platform denial of service.
{
"affected": [],
"aliases": [
"CVE-2025-25374"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-25T21:15:42Z",
"severity": "HIGH"
},
"details": "In NASA cFS (Core Flight System) Aquila, it is possible to put the onboard software in a state that will prevent the launch of any external application, causing a platform denial of service.",
"id": "GHSA-6mxg-4m6j-9xh2",
"modified": "2025-03-26T15:32:38Z",
"published": "2025-03-25T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-25374"
},
{
"type": "WEB",
"url": "https://visionspace.com/nasa-cfs-version-aquila-software-vulnerability-assessment"
}
],
"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-6MXM-8W9R-4997
Vulnerability from github – Published: 2022-05-13 01:27 – Updated: 2024-12-13 15:30Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.
{
"affected": [],
"aliases": [
"CVE-2018-12122"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-28T17:29:00Z",
"severity": "HIGH"
},
"details": "Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.",
"id": "GHSA-6mxm-8w9r-4997",
"modified": "2024-12-13T15:30:38Z",
"published": "2022-05-13T01:27:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-12122"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:1821"
},
{
"type": "WEB",
"url": "https://nodejs.org/en/blog/vulnerability/november-2018-security-releases"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202003-48"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20241213-0009"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/106043"
}
],
"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"
}
]
}
GHSA-6P4F-WCWH-5VVM
Vulnerability from github – Published: 2026-04-29 12:33 – Updated: 2026-05-06 22:30Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources.
More precisely, an application can be vulnerable when all the following are true:
- the application is using Spring MVC or Spring WebFlux
- the application is serving static resources from the file system
- the application is running on a Windows platform
When all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 7.0.6"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webflux"
},
"ranges": [
{
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.2.17"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webflux"
},
"ranges": [
{
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.2.18"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webflux"
},
"ranges": [
{
"events": [
{
"introduced": "6.1.0"
},
{
"last_affected": "6.1.26"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webflux"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.3.47"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 7.0.6"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webmvc"
},
"ranges": [
{
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.2.17"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webmvc"
},
"ranges": [
{
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.2.18"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webmvc"
},
"ranges": [
{
"events": [
{
"introduced": "6.1.0"
},
{
"last_affected": "6.1.26"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework:spring-webmvc"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.3.47"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-22745"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T22:30:01Z",
"nvd_published_at": "2026-04-29T12:16:18Z",
"severity": "MODERATE"
},
"details": "Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources.\n\n\nMore precisely, an application can be vulnerable when all the following are true:\n\n * the application is using Spring MVC or Spring WebFlux\n * the application is serving static resources from the file system\n * the application is running on a Windows platform\n\n\nWhen all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application.",
"id": "GHSA-6p4f-wcwh-5vvm",
"modified": "2026-05-06T22:30:01Z",
"published": "2026-04-29T12:33:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22745"
},
{
"type": "PACKAGE",
"url": "https://github.com/spring-projects/spring-framework"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-22745"
}
],
"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"
}
],
"summary": "Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources"
}
GHSA-6P9P-Q6WH-9J89
Vulnerability from github – Published: 2026-02-03 23:58 – Updated: 2026-02-04 21:55expandapk.Split drains the first gzip stream of an APK archive via io.Copy(io.Discard, gzi) without explicit bounds. With an attacker-controlled input stream, this can force large gzip inflation work and lead to resource exhaustion (availability impact).
The Split function reads the first tar header, then drains the remainder of the gzip stream by reading from the gzip reader directly without any maximum uncompressed byte limit or inflate-ratio cap. A caller that parses attacker-controlled APK streams may be forced to spend excessive CPU time inflating gzip data, leading to timeouts or process slowdown.
Fix: Fixed with 2be3903, Released in v1.1.0.
Acknowledgements
apko thanks Oleh Konko from 1seal for discovering and reporting this issue.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "chainguard.dev/apko"
},
"ranges": [
{
"events": [
{
"introduced": "0.14.8"
},
{
"fixed": "1.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-25122"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-03T23:58:37Z",
"nvd_published_at": "2026-02-04T19:16:14Z",
"severity": "MODERATE"
},
"details": "`expandapk.Split` drains the first gzip stream of an APK archive via `io.Copy(io.Discard, gzi)` without explicit bounds. With an attacker-controlled input stream, this can force large gzip inflation work and lead to resource exhaustion (availability impact). \n \nThe `Split` function reads the first tar header, then drains the remainder of the gzip stream by reading from the gzip reader directly without any maximum uncompressed byte limit or inflate-ratio cap. A caller that parses attacker-controlled APK streams may be forced to spend excessive CPU time inflating gzip data, leading to timeouts or process slowdown. \n \n**Fix:** Fixed with [2be3903](https://github.com/chainguard-dev/apko/commit/2be3903fe194ad46351840f0569b35f5ac965f09), Released in v1.1.0. \n \n**Acknowledgements** \n \napko thanks Oleh Konko from [1seal](https://1seal.org/) for discovering and reporting this issue.",
"id": "GHSA-6p9p-q6wh-9j89",
"modified": "2026-02-04T21:55:51Z",
"published": "2026-02-03T23:58:37Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/chainguard-dev/apko/security/advisories/GHSA-6p9p-q6wh-9j89"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25122"
},
{
"type": "WEB",
"url": "https://github.com/chainguard-dev/apko/commit/2be3903fe194ad46351840f0569b35f5ac965f09"
},
{
"type": "PACKAGE",
"url": "https://github.com/chainguard-dev/apko"
}
],
"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"
}
],
"summary": "apko affected by unbounded resource consumption in expandapk.Split on attacker-controlled .apk streams "
}
GHSA-6PR8-G9PQ-XMJ3
Vulnerability from github – Published: 2024-08-15 18:31 – Updated: 2024-08-16 15:31Tenda FH1206 v02.03.01.35 was discovered to contain a stack overflow via the page parameter in the fromSafeUrlFilter function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
{
"affected": [],
"aliases": [
"CVE-2024-42969"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-15T17:15:20Z",
"severity": "HIGH"
},
"details": "Tenda FH1206 v02.03.01.35 was discovered to contain a stack overflow via the page parameter in the fromSafeUrlFilter function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.",
"id": "GHSA-6pr8-g9pq-xmj3",
"modified": "2024-08-16T15:31:41Z",
"published": "2024-08-15T18:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42969"
},
{
"type": "WEB",
"url": "https://github.com/TTTJJJWWW/AHU-IoT-vulnerable/blob/main/Tenda/FH1206/fromSafeMacFilter%20_page.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-6Q22-G298-GRJH
Vulnerability from github – Published: 2026-04-04 06:13 – Updated: 2026-04-04 06:13Summary
The GraphQL specification permits a single query to repeat the same field multiple times using aliases, with each alias resolved independently by default. Directus did not deduplicate resolver invocations within a single request, meaning each alias triggered a full, independent execution of the underlying resolver.
The health check resolver ran all backend checks (database connectivity, cache, storage writes, and SMTP verification) on every invocation. Combined with unauthenticated access to the system GraphQL endpoint, this allowed an attacker to amplify resource consumption significantly from a single HTTP request, exhausting the database connection pool, storage I/O, and SMTP connections.
Fix
A request-scoped resolver deduplication mechanism was introduced and applied broadly across all GraphQL read resolvers, both system and items endpoints. When multiple aliases in a single request invoke the same resolver with identical arguments, only the first call executes; all subsequent aliases share its result. This eliminates the amplification factor regardless of how many aliases an attacker includes in a query.
Impact
- Service degradation or outage: Database connection pool exhaustion prevents all Directus operations for all users
- Storage I/O saturation: Concurrent file writes can overwhelm disk I/O
- SMTP resource exhaustion: Concurrent SMTP verification calls may overwhelm the mail server
- No authentication required: Any network-accessible attacker can trigger this condition
- Single-request impact: A single request is sufficient to cause significant resource consumption
Credit
This vulnerability was discovered and reported by bugbunny.ai.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "directus"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "11.17.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-04T06:13:25Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "## Summary\n\nThe GraphQL specification permits a single query to repeat the same field multiple times using aliases, with each alias resolved independently by default. Directus did not deduplicate resolver invocations within a single request, meaning each alias triggered a full, independent execution of the underlying resolver.\n\nThe health check resolver ran all backend checks (database connectivity, cache, storage writes, and SMTP verification) on every invocation. Combined with unauthenticated access to the system GraphQL endpoint, this allowed an attacker to amplify resource consumption significantly from a single HTTP request, exhausting the database connection pool, storage I/O, and SMTP connections.\n\n## Fix\n\nA request-scoped resolver deduplication mechanism was introduced and applied broadly across all GraphQL read resolvers, both system and items endpoints. When multiple aliases in a single request invoke the same resolver with identical arguments, only the first call executes; all subsequent aliases share its result. This eliminates the amplification factor regardless of how many aliases an attacker includes in a query.\n\n## Impact\n\n- **Service degradation or outage:** Database connection pool exhaustion prevents all Directus operations for all users\n- **Storage I/O saturation:** Concurrent file writes can overwhelm disk I/O\n- **SMTP resource exhaustion:** Concurrent SMTP verification calls may overwhelm the mail server\n- **No authentication required:** Any network-accessible attacker can trigger this condition\n- **Single-request impact:** A single request is sufficient to cause significant resource consumption\n\n## Credit\n\nThis vulnerability was discovered and reported by [bugbunny.ai](https://bugbunny.ai).",
"id": "GHSA-6q22-g298-grjh",
"modified": "2026-04-04T06:13:25Z",
"published": "2026-04-04T06:13:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/directus/directus/security/advisories/GHSA-6q22-g298-grjh"
},
{
"type": "PACKAGE",
"url": "https://github.com/directus/directus"
}
],
"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": "Directus: Unauthenticated Denial of Service via GraphQL Alias Amplification of Expensive Health Check Resolver"
}
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.