CWE-1108
AllowedExcessive Reliance on Global Variables
Abstraction: Base · Status: Incomplete
The code is structured in a way that relies too much on using or setting global variables throughout various points in the code, instead of preserving the associated information in a narrower, more local context.
7 vulnerabilities reference this CWE, most recent first.
CVE-2026-32841 (GCVE-0-2026-32841)
Vulnerability from cvelistv5 – Published: 2026-03-17 21:41 – Updated: 2026-05-26 11:52 Unsupported When Assigned- CWE-1108 - Excessive Reliance on Global Variables
| URL | Tags |
|---|---|
| https://www.edimax.com/edimax/merchandise/merchan… | product |
| https://www.edimax.com/edimax/merchandise/merchan… | product |
| https://www.vulncheck.com/advisories/edimax-gs-50… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| EDIMAX Technology Co., Ltd. | Edimax GS-5008PL |
Affected:
0 , ≤ 1.0.54
(semver)
|
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CVE-2024-47827 (GCVE-0-2024-47827)
Vulnerability from cvelistv5 – Published: 2024-10-28 15:10 – Updated: 2025-04-04 20:43| URL | Tags |
|---|---|
| https://github.com/argoproj/argo-workflows/securi… | x_refsource_CONFIRM |
| https://github.com/argoproj/argo-workflows/pull/13641 | x_refsource_MISC |
| https://github.com/argoproj/argo-workflows/commit… | x_refsource_MISC |
| https://github.com/argoproj/argo-workflows/blob/c… | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| argoproj | argo-workflows |
Affected:
>= 3.6.0-rc1, < 3.6.0-rc2
|
|
| argoproj | argo-workflows |
Affected:
3.6.0-rc1 , < 3.6.0-rc2
(custom)
cpe:2.3:a:argoproj:argo-workflows:3.6.0-rc1:*:*:*:*:*:*:* |
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CVE-2022-2642 (GCVE-0-2022-2642)
Vulnerability from cvelistv5 – Published: 2022-12-12 01:50 – Updated: 2025-04-16 16:05- CWE-1108 - EXCESSIVE RELIANCE ON GLOBAL VARIABLES
| Vendor | Product | Version | |
|---|---|---|---|
| Horner Automation | Remote Compact Controller (RCC) 972 |
Affected:
Firmware Version 15.40
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GHSA-87WQ-4Q6J-76W5
Vulnerability from github – Published: 2026-03-18 00:30 – Updated: 2026-03-18 00:30Edimax GS-5008PL firmware version 1.00.54 and prior contain an authentication bypass vulnerability that allows unauthenticated attackers to access the management interface. Attackers can exploit the global authentication flag mechanism to gain administrative access without credentials after any user authenticates, enabling unauthorized password changes, firmware uploads, and configuration modifications.
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GHSA-GHJW-32XW-FFWR
Vulnerability from github – Published: 2024-10-28 18:28 – Updated: 2026-02-06 21:31Summary
Due to a race condition in a global variable, the argo workflows controller can be made to crash on-command by any user with access to execute a workflow.
This was resolved by https://github.com/argoproj/argo-workflows/pull/13641
Details
These two lines introduce a data race in the underlying SPDY implementation of the Kubernetes API client. If a second request is made before the first completes, it results in a panic due to a null pointer. * https://github.com/argoproj/argo-workflows/blob/ce7f9bfb9b45f009b3e85fabe5e6410de23c7c5f/workflow/metrics/metrics_k8s_request.go#L49 * https://github.com/argoproj/argo-workflows/blob/ce7f9bfb9b45f009b3e85fabe5e6410de23c7c5f/workflow/metrics/metrics_k8s_request.go#L75
This appears to have been added in this commit https://github.com/argoproj/argo-workflows/commit/9756babd0ed589d1cd24592f05725f748f74130b / #13265 / v3.6.0-rc1
PoC
With the KUBECONFIG variable set to an appropriate file with create permissions for the Workflow kind, execute the following bash script:
#!/bin/bash -xeu
while true ; do
name=$(
{ argo submit /dev/stdin <<'EOF'
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
generateName: curl-
spec:
entrypoint: main
templates:
- name: main
dag:
tasks:
- name: no-op
template: no-op
withSequence:
count: 3
- name: no-op
daemon: true
container:
image: alpine:3.13
command: [sleep, infinity]
EOF
} | head -n1 | awk '{ print $2 }'
)
( sleep 30; argo terminate $name ) &
sleep 15
done
This script creates, and subsequently cleans up, multiple daemon pods in rapid succession. Each pod cleanup involves executing a kill instruction using the Kubernetes exec API, triggering the conditions for the panic. This can be seen when the tests mark the pods as complete, but the workflow itself never completes. Observing the controller logs when this happens shows the panic and restart of the controller every few seconds. In a setup with exponential backoff (e.g. a Kubernetes Pod) this is enough to reliably cause crashes enough to extend this backoff significantly and leave other workflows stalled.
Because the restarted controller believes it has sent the kill signal, it will wait indefinitely for the pod to terminate, which it never will, so the attack must constantly garbage-collect its own workflows with the argo terminate command, otherwise the maximum concurrently running workflows will be reached. A more sophisticated attack could detect when the workflow has been signaled to clean up and terminate it then instead of relying on a simple timer.
Impact
A malicious user with access to create workflows can continually submit workflows that do nothing except create and then clean up multiple daemon pods, resulting in a crash-loop that prevents other users' workflows from running. This can be done with only a handful of pods and very little cpu and memory, meaning typical multi-tenant Kubernetes controls such as Pod count and resource quotas are not effective at preventing it.
Because the panic log does not in any way suggest that the issue has anything to do with the daemon pods, and an attacker could easily disguise these daemon pods as part of a genuine workflow, it would be difficult for administrators to discover the root cause of the DoS and the individuals responsible to remove their access.
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"severity": "MODERATE"
},
"details": "### Summary\n\nDue to a race condition in a global variable, the argo workflows controller can be made to crash on-command by any user with access to execute a workflow.\n\nThis was resolved by https://github.com/argoproj/argo-workflows/pull/13641\n\n### Details\n\nThese two lines introduce a data race in the underlying SPDY implementation of the Kubernetes API client. If a second request is made before the first completes, it results in a panic due to a null pointer.\n* https://github.com/argoproj/argo-workflows/blob/ce7f9bfb9b45f009b3e85fabe5e6410de23c7c5f/workflow/metrics/metrics_k8s_request.go#L49\n* https://github.com/argoproj/argo-workflows/blob/ce7f9bfb9b45f009b3e85fabe5e6410de23c7c5f/workflow/metrics/metrics_k8s_request.go#L75\n\nThis appears to have been added in this commit https://github.com/argoproj/argo-workflows/commit/9756babd0ed589d1cd24592f05725f748f74130b / #13265 / v3.6.0-rc1\n\n### PoC\n\nWith the `KUBECONFIG` variable set to an appropriate file with `create` permissions for the `Workflow` kind, execute the following bash script:\n\n```bash\n#!/bin/bash -xeu\n\nwhile true ; do\n name=$(\n { argo submit /dev/stdin \u003c\u003c\u0027EOF\u0027\napiVersion: argoproj.io/v1alpha1\nkind: Workflow\nmetadata:\n generateName: curl-\nspec:\n entrypoint: main\n templates:\n - name: main\n dag:\n tasks:\n - name: no-op\n template: no-op\n withSequence:\n count: 3\n - name: no-op\n daemon: true\n container:\n image: alpine:3.13\n command: [sleep, infinity]\nEOF\n } | head -n1 | awk \u0027{ print $2 }\u0027\n )\n ( sleep 30; argo terminate $name ) \u0026\n sleep 15\ndone\n```\n\nThis script creates, and subsequently cleans up, multiple `daemon` pods in rapid succession. Each pod cleanup involves executing a `kill` instruction using the Kubernetes `exec` API, triggering the conditions for the panic. This can be seen when the tests mark the pods as complete, but the workflow itself never completes. Observing the controller logs when this happens shows the panic and restart of the controller every few seconds. In a setup with exponential backoff (e.g. a Kubernetes Pod) this is enough to reliably cause crashes enough to extend this backoff significantly and leave other workflows stalled.\n\nBecause the restarted controller believes it has sent the `kill` signal, it will wait indefinitely for the pod to terminate, which it never will, so the attack must constantly garbage-collect its own workflows with the `argo terminate` command, otherwise the maximum concurrently running workflows will be reached. A more sophisticated attack could detect when the workflow has been signaled to clean up and terminate it then instead of relying on a simple timer.\n\n### Impact\n\nA malicious user with access to create workflows can continually submit workflows that do nothing except create and then clean up multiple daemon pods, resulting in a crash-loop that prevents other users\u0027 workflows from running. This can be done with only a handful of pods and very little cpu and memory, meaning typical multi-tenant Kubernetes controls such as Pod count and resource quotas are not effective at preventing it.\n\nBecause the panic log does not in any way suggest that the issue has anything to do with the daemon pods, and an attacker could easily disguise these daemon pods as part of a genuine workflow, it would be difficult for administrators to discover the root cause of the DoS and the individuals responsible to remove their access.",
"id": "GHSA-ghjw-32xw-ffwr",
"modified": "2026-02-06T21:31:12Z",
"published": "2024-10-28T18:28:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/argoproj/argo-workflows/security/advisories/GHSA-ghjw-32xw-ffwr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47827"
},
{
"type": "WEB",
"url": "https://github.com/argoproj/argo-workflows/pull/13641"
},
{
"type": "WEB",
"url": "https://github.com/argoproj/argo-workflows/commit/524406451f4dfa57bf3371fb85becdb56a2b309a"
},
{
"type": "PACKAGE",
"url": "https://github.com/argoproj/argo-workflows"
},
{
"type": "WEB",
"url": "https://github.com/argoproj/argo-workflows/blob/ce7f9bfb9b45f009b3e85fabe5e6410de23c7c5f/workflow/metrics/metrics_k8s_request.go#L75"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Argo Workflows Controller: Denial of Service via malicious daemon Workflows"
}
GHSA-H944-MX2G-43VQ
Vulnerability from github – Published: 2026-01-31 00:30 – Updated: 2026-02-04 18:30IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3 could allow an unauthenticated user to cause a denial of service due to excessive use of a global variable.
{
"affected": [],
"aliases": [
"CVE-2025-36009"
],
"database_specific": {
"cwe_ids": [
"CWE-1108",
"CWE-1284"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-30T22:15:53Z",
"severity": "MODERATE"
},
"details": "IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3 could allow an unauthenticated user to cause a denial of service due to excessive use of a global variable.",
"id": "GHSA-h944-mx2g-43vq",
"modified": "2026-02-04T18:30:28Z",
"published": "2026-01-31T00:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36009"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7257623"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7257695"
}
],
"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-VXFJ-H2JV-2PGR
Vulnerability from github – Published: 2023-07-06 19:24 – Updated: 2024-04-04 05:30Horner Automation’s RCC 972 firmware version 15.40 contains global variables. This could allow an attacker to read out sensitive values and variable keys from the device.
{
"affected": [],
"aliases": [
"CVE-2022-2642"
],
"database_specific": {
"cwe_ids": [
"CWE-1108"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-12-02T20:15:00Z",
"severity": "HIGH"
},
"details": "Horner Automation\u2019s RCC 972 firmware version 15.40 contains global variables. This could allow an attacker to read out sensitive values and variable keys from the device.",
"id": "GHSA-vxfj-h2jv-2pgr",
"modified": "2024-04-04T05:30:43Z",
"published": "2023-07-06T19:24:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2642"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-335-02"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.