High severity7.5NVD Advisory· Published Apr 17, 2026· Updated Apr 27, 2026

CVE-2026-5807

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
github.com/hashicorp/vaultGo	<= 1.21.4	—

Affected products

Hashicorp/Vault2 versions
cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*+ 1 more
- cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:*range: <2.0.0
- cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:*range: <2.0.0
osv-coords3 versions
pkg:bitnami/vault pkg:golang/github.com/hashicorp/vault pkg:rpm/opensuse/openbao&distro=openSUSE%20Tumbleweed
>= 0.10.0, < 2.0.0+ 2 more
- (no CPE)range: >= 0.10.0, < 2.0.0
- (no CPE)range: <= 1.21.4
- (no CPE)range: < 2.5.3-1.1

Patches

Vulnerability mechanics

References

discuss.hashicorp.com/t/hcsec-2026-08-vault-vulnerable-to-denial-of-service-via-unauthenticated-root-token-generation-rekey-operations/77345nvdVendor AdvisoryWEB
github.com/advisories/GHSA-88v5-9hxc-f85rghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-5807ghsaADVISORY

News mentions

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cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000