CVE-2026-5807
Denial-of-Service in Vault Root Token Generation Blocks Operators
Publication date: 2026-04-17
Last updated on: 2026-04-27
Assigner: HashiCorp Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| hashicorp | vault | to 2.0.0 (exc) |
| hashicorp | vault | to 2.0.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-770 | The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in Vault allows an unauthenticated attacker to cause a denial-of-service condition by repeatedly initiating or canceling root token generation or rekey operations.
Because Vault only allows one such operation to be in progress at a time, the attacker can occupy this single operation slot, preventing legitimate operators from completing these critical workflows.
How can this vulnerability impact me? :
The impact of this vulnerability is a denial-of-service condition where legitimate users are blocked from completing root token generation or rekey operations.
This can disrupt normal Vault operations, potentially delaying critical security management tasks and affecting availability.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, upgrade Vault to version 2.0.0 or later, as the issue is fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0.