CVE-2026-5807: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Vault
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.
AI Analysis
Technical Summary
CVE-2026-5807 is a denial-of-service vulnerability in HashiCorp Vault caused by allocation of resources without limits or throttling (CWE-770). An unauthenticated attacker can repeatedly start or cancel root token generation or rekey operations, occupying the single in-progress operation slot and blocking legitimate operations. This vulnerability affects Vault versions before 2.0.0 and has a CVSS 3.1 base score of 7.5 (high severity). The issue is resolved in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.
Potential Impact
The vulnerability allows an unauthenticated attacker to cause a denial-of-service by blocking critical Vault workflows such as root token generation and rekey operations. This prevents legitimate operators from completing these essential tasks, potentially disrupting Vault management and recovery processes. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0. Users should upgrade to these versions or later to remediate this vulnerability. No vendor advisory explicitly states alternative mitigations or temporary workarounds. Patch status is confirmed by the vendor advisory and CVE description.
CVE-2026-5807: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Vault
Description
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.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5807 is a denial-of-service vulnerability in HashiCorp Vault caused by allocation of resources without limits or throttling (CWE-770). An unauthenticated attacker can repeatedly start or cancel root token generation or rekey operations, occupying the single in-progress operation slot and blocking legitimate operations. This vulnerability affects Vault versions before 2.0.0 and has a CVSS 3.1 base score of 7.5 (high severity). The issue is resolved in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.
Potential Impact
The vulnerability allows an unauthenticated attacker to cause a denial-of-service by blocking critical Vault workflows such as root token generation and rekey operations. This prevents legitimate operators from completing these essential tasks, potentially disrupting Vault management and recovery processes. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0. Users should upgrade to these versions or later to remediate this vulnerability. No vendor advisory explicitly states alternative mitigations or temporary workarounds. Patch status is confirmed by the vendor advisory and CVE description.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HashiCorp
- Date Reserved
- 2026-04-08T14:43:57.845Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-5807","vendor":"Red Hat"}]
Threat ID: 69e1b7b882d89c981f6ce769
Added to database: 04/17/2026, 04:31:52 UTC
Last enriched: 07/15/2026, 09:35:03 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 211
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