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CVE-2026-5807

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

Published: Apr 17, 2026Updated: Apr 27, 2026 Sources: CVE List NVD BDUCWE-770
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 63.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-770

Affected Products

VaultHashiCorp
SaaSSaaS Service
Cloud & SaaS
Vault EnterpriseHashiCorp
SaaSSaaS Service
Cloud & SaaS
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Red Hat Openshift Data FoundationRed Hat Inc.
On-prem
Cloud & SaaS / container-orchestration
Red Hat OpenShift Container PlatformRed Hat Inc.
SaaSSaaS Service
Cloud & SaaS / container-orchestration
hashicorpcommercialUSCloud & SaaSaka hashicorp inc.
ооо «ред софт»commercialRUOperating Systemsaka red soft
red hat inc.commercialUSOperating Systemsaka red hat
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345
discuss.hashicorp.com
https://discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345
discuss.hashicorp.com
https://github.com/advisories/GHSA-88v5-9hxc-f85r
github.com
and 2 more references View all →

Timeline

Published
Apr 17, 2026
Last Updated
Apr 27, 2026

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