vaultGHSA-88v5-9hxc-f85r
HashiCorp Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations
High7.5CVE-2026-5807 · Published Apr 17, 2026 · updated Sep 10, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| github.com/hashicorp/vault Go | <= 1.21.4 | No fix yet |
Details and references
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 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-770
- Also known as
- BIT-vault-2026-5807, CVE-2026-5807, GO-2026-5247
- nvd.nist.gov/vuln/detail/CVE-2026-5807
- access.redhat.com/security/cve/CVE-2026-5807
- bugzilla.redhat.com/show_bug.cgi?id=2459109
- discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345
- github.com/advisories/GHSA-88v5-9hxc-f85r
- github.com/hashicorp/vault
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json
More vault advisories
All| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Apr 17 | HashiCorp Vault May Expose Tokens to Auth Plugins Due to Incorrect Header Sanitization CVE-2026-4525High7.5no fix yet | High7.5 | No fix yet |
| Apr 17 | HashiCorp Vault has Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS CVE-2026-5052Medium5.3no fix yet | Medium5.3 | No fix yet |
| Apr 17 | HashiCorp Vault has a KVv2 Metadata and Secret Deletion Policy Bypass that leads to Denial-of-Service CVE-2026-3605High8.1no fix yet | High8.1 | No fix yet |
| Oct 232025 | Hashicorp Vault and Vault Enterprise vulnerable to a denial of service when processing JSON CVE-2025-12044High7.5fixed in 1.21.0 | High7.5 | 1.21.0 |
| Oct 232025 | HashiCorp Vault and Vault Enterprise's AWS Auth method may be susceptible to authentication bypass CVE-2025-11621High8.1fixed in 1.21.0 | High8.1 | 1.21.0 |
| Aug 282025 | HashiCorp Vault Community Edition Denial of Service Though Complex JSON Payloads CVE-2025-6203High7.5fixed in 1.20.3 | High7.5 | 1.20.3 |