CVE-2026-2808 (GCVE-0-2026-2808)
Vulnerability from cvelistv5 – Published: 2026-03-11 23:08 – Updated: 2026-03-11 23:08
VLAI?
Title
Consul vulnerable to arbitrary file reads through the vault kubernetes authentication provider
Summary
HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5.
Severity ?
6.8 (Medium)
CWE
- CWE-59 - Improper Link Resolution Before File Access (Link Following)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| HashiCorp | Consul |
Affected:
0 , < 1.22.5
(semver)
|
|||||||
|
|||||||||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"64 bit",
"32 bit",
"x86",
"ARM",
"MacOS",
"Windows",
"Linux"
],
"product": "Consul",
"repo": "https://github.com/hashicorp/consul",
"vendor": "HashiCorp",
"versions": [
{
"lessThan": "1.22.5",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"platforms": [
"64 bit",
"32 bit",
"x86",
"ARM",
"MacOS",
"Windows",
"Linux"
],
"product": "Consul Enterprise",
"repo": "https://github.com/hashicorp/consul",
"vendor": "HashiCorp",
"versions": [
{
"changes": [
{
"at": "1.21.11",
"status": "unaffected"
},
{
"at": "1.18.21",
"status": "unaffected"
}
],
"lessThan": "1.22.5",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"descriptions": [
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"supportingMedia": [
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"base64": false,
"type": "text/html",
"value": "\u003cp\u003eHashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5.\u003c/p\u003e\u003cbr/\u003e"
}
],
"value": "HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5."
}
],
"impacts": [
{
"capecId": "CAPEC-23",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-23: File Content Injection"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (Link Following)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-11T23:08:32.414Z",
"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"shortName": "HashiCorp"
},
"references": [
{
"url": "https://discuss.hashicorp.com/t/hcsec-2026-02-consul-vulnerable-to-arbitrary-file-reads-through-the-vault-kubernetes-authentication-provider/77232"
}
],
"source": {
"advisory": "HCSEC-2026-02",
"discovery": "EXTERNAL"
},
"title": "Consul vulnerable to arbitrary file reads through the vault kubernetes authentication provider"
}
},
"cveMetadata": {
"assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"assignerShortName": "HashiCorp",
"cveId": "CVE-2026-2808",
"datePublished": "2026-03-11T23:08:32.414Z",
"dateReserved": "2026-02-19T15:17:24.550Z",
"dateUpdated": "2026-03-11T23:08:32.414Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-2808\",\"sourceIdentifier\":\"security@hashicorp.com\",\"published\":\"2026-03-12T00:16:11.770\",\"lastModified\":\"2026-03-12T00:16:11.770\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"HashiCorp Consul and Consul Enterprise 1.18.20 up to 1.21.10 and 1.22.4 are vulnerable to arbitrary file read when configured with Kubernetes authentication. This vulnerability, CVE-2026-2808, is fixed in Consul 1.18.21, 1.21.11 and 1.22.5.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.3,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-59\"}]}],\"references\":[{\"url\":\"https://discuss.hashicorp.com/t/hcsec-2026-02-consul-vulnerable-to-arbitrary-file-reads-through-the-vault-kubernetes-authentication-provider/77232\",\"source\":\"security@hashicorp.com\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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