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CVE-2026-5807

Vault Vulnerable to Denial-of-Service via Unauthenticated Root Token Generation/Rekey Operations

HIGH
7.5
CVSS Score
Published: April 17, 2026 at 03:22 AM UTC
Updated: July 15, 2026 at 01:16 AM UTC
2 products affected across 2 vendorsVaultOpenShift Data Foundation

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vault· Hashicorp
95%
v < 2.0.0v < 2.0.0.
Affected range stops below 2.0.0, so it looks safe — our inference, not a vendor statement
OpenShift Data Foundation· Red Hatcontainer
60%
4
Vendor states this is fixed in 4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Vendor Advisory
Source: cverecord
https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-5807
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2459109
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5807.json

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHHashiCorp
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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