OpenBao up to 2.5.2 removal of sensitive information

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBao up to 2.5.2. It has been classified as problematic. This affects an unknown part. The manipulation leads to removal of sensitive information. This vulnerability is listed as CVE-2026-42186. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenBao up to 2.5.2 and classified as problematic. This issue affects an unknown code block. The manipulation with an unknown input leads to a removal of sensitive information vulnerability. Using CWE to declare the problem leads to CWE-212. The product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors. Impacted is integrity. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-42186 since 04/25/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 2.5.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 6d2e0506e2b41be0eaa6643bf7b4efc9a2c09445 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Removal of sensitive information
CWE: CWE-212 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenBao 2.5.3
Patch: 6d2e0506e2b41be0eaa6643bf7b4efc9a2c09445

Timelineinfo

04/25/2026 CVE reserved
05/14/2026 +19 days Advisory disclosed
05/14/2026 +0 days VulDB entry created
05/19/2026 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-vv66-6rp4-wr4f
Status: Confirmed

CVE: CVE-2026-42186 (🔒)
GCVE (CVE): GCVE-0-2026-42186
GCVE (VulDB): GCVE-100-363893

Entryinfo

Created: 05/14/2026 17:30
Updated: 05/19/2026 10:56
Changes: 05/14/2026 17:30 (68), 05/19/2026 10:56 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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