CVE-2026-5807: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Vault
HashiCorp Vault versions prior to 2. 0. 0 are vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations. This abuse occupies the single in-progress operation slot, preventing legitimate operators from completing these critical workflows. The vulnerability is identified as CVE-2026-5807 and is classified under CWE-770, relating to allocation of resources without limits or throttling. A fix is available 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 that allows an unauthenticated attacker to repeatedly start or cancel root token generation or rekey operations. Because Vault only allows one such operation in progress at a time, this can block legitimate users from completing these workflows. The vulnerability stems from the lack of limits or throttling on these resource-intensive operations (CWE-770). It affects Vault versions before 2.0.0. The issue is fixed in Vault Community and Enterprise editions version 2.0.0.
Potential Impact
An unauthenticated attacker can cause a denial-of-service by occupying the single in-progress root token generation or rekey operation slot, preventing legitimate operators from completing these critical workflows. This does not impact confidentiality or integrity but results in availability disruption of key Vault operations.
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 to remediate the vulnerability. No vendor advisory content contradicts this; therefore, upgrading is the recommended mitigation.
CVE-2026-5807: CWE-770: Allocation of Resources Without Limits or Throttling in HashiCorp Vault
Description
HashiCorp Vault versions prior to 2. 0. 0 are vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token generation or rekey operations. This abuse occupies the single in-progress operation slot, preventing legitimate operators from completing these critical workflows. The vulnerability is identified as CVE-2026-5807 and is classified under CWE-770, relating to allocation of resources without limits or throttling. A fix is available in Vault Community Edition 2. 0. 0 and Vault Enterprise 2. 0. 0.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5807 is a denial-of-service vulnerability in HashiCorp Vault that allows an unauthenticated attacker to repeatedly start or cancel root token generation or rekey operations. Because Vault only allows one such operation in progress at a time, this can block legitimate users from completing these workflows. The vulnerability stems from the lack of limits or throttling on these resource-intensive operations (CWE-770). It affects Vault versions before 2.0.0. The issue is fixed in Vault Community and Enterprise editions version 2.0.0.
Potential Impact
An unauthenticated attacker can cause a denial-of-service by occupying the single in-progress root token generation or rekey operation slot, preventing legitimate operators from completing these critical workflows. This does not impact confidentiality or integrity but results in availability disruption of key Vault operations.
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 to remediate the vulnerability. No vendor advisory content contradicts this; therefore, upgrading is the recommended mitigation.
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
Threat ID: 69e1b7b882d89c981f6ce769
Added to database: 4/17/2026, 4:31:52 AM
Last enriched: 4/24/2026, 4:17:18 PM
Last updated: 6/1/2026, 9:53:51 AM
Views: 134
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