Is Hashicorp affected by CVE-2026-5807?

HashiCorp Vault versions prior to 2.0.0 contain an unauthenticated denial-of-service vulnerability that allows attackers to block critical administrative functions including root token generation and key rotation operations.

CVE-2026-5807

EUVD-2026-23362 HIGH

2026-04-17 HashiCorp

Denial Of Service Hashicorp

7.5

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 17, 2026 - 05:27 vuln.today

v2 (cvss_changed)

Re-analysis Queued

Apr 17, 2026 - 05:22 vuln.today

cvss_changed

patch_available

Apr 17, 2026 - 05:01 EUVD

Analysis Generated

Apr 17, 2026 - 04:41 vuln.today

DescriptionNVD

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.

AnalysisAI

Unauthenticated denial-of-service in HashiCorp Vault versions prior to 2.0.0 allows remote attackers to block legitimate root token generation and rekey operations by repeatedly initiating or canceling these workflows. Attackers exploit a single-slot operation queue (CWE-770: Allocation of Resources Without Limits), preventing administrative recovery and key rotation procedures. …

RemediationAI

Within 24 hours: Inventory all HashiCorp Vault deployments and identify instances running versions prior to 2.0.0. Within 7 days: Test upgrade to Vault 2.0.0 or later in a non-production environment and validate root token and rekey workflow functionality. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-5807 vulnerability details – vuln.today

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CVE-2026-5807

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

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External POC / Exploit Code