GitHub Advisoryadvisory · Go
GHSA-88v5-9hxc-f85r HashiCorp Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations
HIGH
Official page ↗
- Aliases
- CVE-2026-5807
- Ecosystem
- Go
- Packages
- github.com/hashicorp/vault
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
- Reviewed
- 2026-04-18
Affected packages
• Go github.com/hashicorp/vault: <= 1.21.4 (no fix yet)
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.
Related
Alias · CVE (1)
- CVE-2026-5807 Vault is vulnerable to a denial-of-service condition where an unauthenticated attacker can repeatedly initiate or cancel root token… vulnerability
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-5807 advisory
- https://access.redhat.com/security/cve/CVE-2026-5807 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2459109 web
- https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345 web
- https://github.com/advisories/GHSA-88v5-9hxc-f85r advisory
- https://github.com/hashicorp/vault package
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json web