What is CVE-2026-5807?

CVE-2026-5807 is a high-severity vulnerability in Hashicorp Vault, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-04-17.

How severe is CVE-2026-5807?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Hashicorp Vault

CVE-2026-5807

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 o…

EPSS: 0.000 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Hashicorp Vault — versions 0
Hashicorp Vault Enterprise — versions 0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via…

Frequently asked questions

What is CVE-2026-5807?: CVE-2026-5807 is a high-severity vulnerability in Hashicorp Vault, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-04-17.
How severe is CVE-2026-5807?: High severity. CVSS v3 base score is 7.5 out of 10.