Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hashicorp | Vault | < 2.0.0 |
Related Weaknesses (CWE)
References
- https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-servVendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-5807
- https://bugzilla.redhat.com/show_bug.cgi?id=2459109
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json
FAQ
What is CVE-2026-5807?
CVE-2026-5807 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ope...
How severe is CVE-2026-5807?
CVE-2026-5807 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5807?
Check the references section above for vendor advisories and patch information. Affected products include: Hashicorp Vault.