CVE-2026-41520 (GCVE-0-2026-41520)
Vulnerability from cvelistv5
Published
2026-05-08 22:01
Modified
2026-05-13 19:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.15, 1.18.9, and 1.19.3, the output of cilium-bugtool can contain sensitive data when the tool is run against Cilium deployments with WireGuard encryption enabled. This issue has been patched in versions 1.17.15, 1.18.9, and 1.19.3.
References
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Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-41520",
"options": [
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"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-13T19:26:17.922178Z",
"version": "2.0.3"
},
"type": "ssvc"
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"providerMetadata": {
"dateUpdated": "2026-05-13T19:33:28.377Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "cilium",
"vendor": "cilium",
"versions": [
{
"status": "affected",
"version": "\u003c 1.17.15"
},
{
"status": "affected",
"version": "\u003e= 1.18.0, \u003c 1.18.9"
},
{
"status": "affected",
"version": "\u003e= 1.19.0, \u003c 1.19.3"
}
]
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],
"descriptions": [
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}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 7.9,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
}
}
],
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},
{
"descriptions": [
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"providerMetadata": {
"dateUpdated": "2026-05-08T22:01:08.394Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
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"references": [
{
"name": "https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj"
},
{
"name": "https://github.com/cilium/cilium/releases/tag/v1.17.15",
"tags": [
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"url": "https://github.com/cilium/cilium/releases/tag/v1.17.15"
},
{
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"tags": [
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"url": "https://github.com/cilium/cilium/releases/tag/v1.18.9"
},
{
"name": "https://github.com/cilium/cilium/releases/tag/v1.19.3",
"tags": [
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"url": "https://github.com/cilium/cilium/releases/tag/v1.19.3"
}
],
"source": {
"advisory": "GHSA-gj49-89wh-h4gj",
"discovery": "UNKNOWN"
},
"title": "Cillium exposes sensitive information included in the cilium-bugtool debug archive"
}
},
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"dateReserved": "2026-04-20T18:18:50.682Z",
"dateUpdated": "2026-05-13T19:33:28.377Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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