Review reviewHigh

CVE-2026-5807

HashiCorp Vault, Vault Enterprise, Red Hat OpenShift Container Platform 4

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: 7.5
EPSS: 0.72%
CISA KEV: Not listed
Published: 2026.04.17

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.72%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: HashiCorp Vault, Vault Enterprise, Red Hat OpenShift Container Platform 4
Affected versions: < 2.0.0, < 2.0.0.
Fixed versions: 2.0.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that HashiCorp Vault, Vault Enterprise, Red Hat OpenShift Container Platform 4 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-770