CVE-2026-3605: Vault KVv2 Metadata and Secret Deletion Policy Bypass Denial-of-Service
An authenticated user with access to a kvv2 path through a policy containing a glob may be able to delete secrets they were not authorized to read or write, resulting in denial-of-service. This vulnerability did not allow a malicious user to delete secrets across namespaces, nor read any secret data. Fixed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16.
Other sources
An authenticated user with access to a kvv2 path through a policy containing a glob may be able to delete secrets they were not authorized to read or write, resulting in denial-of-service. This vulnerability did not allow a malicious user to delete secrets across namespaces, nor read any secret data. Fxed in Vault Community Edition 2.0.0 and Vault Enterprise 2.0.0, 1.21.5, 1.20.10, and 1.19.16.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
HashiCorp Vaultto a version that resolves this vulnerability.Fixed in 2.0.0 - Upgrade
Upgrade
HashiCorp Vaultto a version that resolves this vulnerability.Fixed in 1.21.5 - Upgrade
Upgrade
HashiCorp Vaultto a version that resolves this vulnerability.Fixed in 1.20.10 - Upgrade
Upgrade
HashiCorp Vaultto a version that resolves this vulnerability.Fixed in 1.19.16
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3605?
CVE-2026-3605 is considered a denial-of-service vulnerability, allowing unauthorized deletion of secrets.
How do I fix CVE-2026-3605?
To mitigate CVE-2026-3605, ensure that policies do not use glob patterns that could expose unauthorized secrets deletion.
Who is affected by CVE-2026-3605?
CVE-2026-3605 affects users of HashiCorp Vault Community Edition up to version 2.0.0 and HashiCorp Vault Enterprise up to versions 2.0.0, 1.21.5, 1.20.10, and 1.19.16.
What kind of access is required to exploit CVE-2026-3605?
An attacker must be an authenticated user with access to a kvv2 path through a policy that includes a glob.
What are the consequences of CVE-2026-3605?
Exploitation of CVE-2026-3605 can result in the unintended deletion of secrets, leading to potential denial-of-service for applications relying on those secrets.