CVE-2026-42186

OpenBao's Namespace Deletion May Not Delete Data Properly

HIGH
7.5
CVSS Score
Published: May 14, 2026 at 02:36 PM UTC
Updated: June 17, 2026 at 10:47 AM UTC
1 product affected across 1 vendorOpenbao

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Severity
HIGH7.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

OpenBao is an open source identity-based secrets management system. Prior to 2.5.3, when OpenBao's initial namespace deletion fails, subsequent retries fail to properly remove all data before marking the namespace as deleted. This can affect any outstanding leases as well as potentially leaving unrelated storage entries around. This vulnerability is fixed in 2.5.3.

Affected

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

v < 2.5.3
Affected range stops below 2.5.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

References (3)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/openbao/openbao/security/advisories/GHSA-vv66-6rp4-wr4f
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/openbao/openbao/releases/tag/v2.5.3

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-212

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