CVE-2026-42186
highpriority · track · 30EPSS 0.002 · 16 %ileDEEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 0.6–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
- Go github.com/openbao/openbao< 0.0.0-20260420173541-6d2e0506e2b4osvUSpkg:golang/github.com/openbao/openbao
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1345OpenBao: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2026-05-03csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in OpenBao ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- GHSA-vv66-6rp4-wr4fOpenBao's Namespace Deletion May Not Delete Data Properly2026-05-05ghsa · osvUS
### Impact 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. ### Patches This will be patched in OpenBao v2.5.3. ### Workarounds Users may manually remove mounts prior to deleting the namespace. Audit logs may be used to identify repeated deletion attempts against the same namespace; `sys/raw` can be used to see what leases were not correctly deleted.
- BIT-openbao-2026-42186OpenBao's Namespace Deletion May Not Delete Data Properly2026-07-27vendor · osvUS
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.
- GO-2026-5674OpenBao's Namespace Deletion May Not Delete Data Properly in github.com/openbao/openbao2026-06-25vendor · osvUS
OpenBao's Namespace Deletion May Not Delete Data Properly in github.com/openbao/openbao
also known as (8)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2026-42186cnnvd
- https://openbao.org/Patchcnnvd
- https://github.com/openbao/openbao/commit/6d2e0506e2b41be0eaa6643bf7b4efc9a2c09445enisa_euvd
- https://github.com/openbao/openbao/releases/tag/v2.5.3enisa_euvd
- https://github.com/openbao/openbao/security/advisories/GHSA-vv66-6rp4-wr4fenisa_euvd
- https://github.com/openbao/openbao/commit/6d2e0506e2b41be0eaa6643bf7b4efc9a2c09445Patchnvd
- https://github.com/openbao/openbao/releases/tag/v2.5.3ProductRelease Notesnvd
- https://github.com/openbao/openbao/security/advisories/GHSA-vv66-6rp4-wr4fMitigationVendor Advisorynvd
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