High
Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations
Type: advisorySources: OSV
Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-5807
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 03:22 UTC · Revision 1
Source evidence
Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations
core-osv · Original sourcePublished 17 Apr 2026, 03:22 UTC
Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.
osv:CVE-2026-5807
Complete source record
{
"id": "180cf343ea23f27c78067aa79f6c3528481044a4a966fc182c9ddee885ed14dc",
"url": "https://osv.dev/vulnerability/CVE-2026-5807",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations",
"summary": "Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations, occupying the single in-progress operation slot. This prevents legitimate operators from completing these workflows. This vulnerability, CVE-2026-5807, is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.",
"evidence": "osv:CVE-2026-5807",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-5807",
"aliases": [
"BIT-vault-2026-5807",
"CVE-2026-5807",
"GHSA-88v5-9hxc-f85r",
"GO-2026-5247"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/hashicorp/vault",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "cf1ce4df8af6e323558bd5f8c37e771388cbc951"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.0.0."
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*",
"range": [
{
"introduced": "0"
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{
"fixed": "2.0.0"
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],
"source": "CPE_RANGE"
}
]
}
}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5807.json"
}
}
],
"modified": "2026-10-28T02:30:25.481117931Z",
"provider": "osv",
"references": [
"https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345",
"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json",
"https://access.redhat.com/security/cve/CVE-2026-5807",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5807.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-5807",
"https://bugzilla.redhat.com/show_bug.cgi?id=2459109",
"https://github.com/hashicorp/vault"
],
"provider_metadata": {
"cwe_ids": [
"CWE-770"
],
"cna_assigner": "HashiCorp",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5807.json"
}
},
"related_cves": [
{
"value": "CVE-2026-5807",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492152,
"published_at": "2026-04-17T03:22:13.816+00:00"
}