Vulnerability · Published Apr 17, 2026 · Assigned by HashiCorp

CVE-2026-3605Vault KVv2 Metadata and Secret Deletion Policy Bypass Denial-of-Service

High 8.1

In plain English

A high-severity authentication bypass in Vault from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.4%top 68.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.23	openbao	2.5.4-r0	ALPINE-CVE-2026-3605
Alpine:v3.24	openbao	2.5.4-r0	ALPINE-CVE-2026-3605
Go	github.com/hashicorp/vault	no fix listed	GHSA-m2w4-8ggf-rj47
Go	github.com/hashicorp/vault	no fix listed	GO-2026-5487

Affected products (as reported)

Vendor	Product	Versions
HashiCorp	Vault	0.10.0 – before 2.0.0
HashiCorp	Vault Enterprise	0.10.0 – before 2.0.0

Weakness: CWE-288, CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References

https://discuss.hashicorp.com/t/hcsec-2026-05-vault-kvv2-metadata-and-secret-deletion-policy-bypass-denial-of-service/77342
https://access.redhat.com/security/cve/CVE-2026-3605 vdb-entry, x_refsource_REDHAT
RHBZ#2459105 issue-tracking, x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3605.json x_sadp-csaf-vex