What’s Vulnerable › Vulnerabilities

CVE-2026-115366: OpenBao 2.3.0 before 2.6.3 Missing Root Namespace Enforcement in Plugin Catalog APIs

• Severity: low (CVSS 2.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-26
• Weakness: CWE-863

Description

OpenBao from 2.3.0 before 2.6.3 contains an improper authorization vulnerability that allows privileged child-namespace tokens to modify plugin registrations because /v1/sys/plugins/catalog/* is not restricted to the root namespace. Attackers can remove existing registrations, create invalid ones, or register installed plugins through a child namespace's sys/ mount, causing denial of service.

Affected products

• openbao: from 2.3.0 before 2.6.3 — fixed in 2.6.3

How to fix

Upgrade to a fixed version: openbao 2.6.3. Check the vendor advisory for mitigations.

References

• https://github.com/openbao/openbao/security/advisories/GHSA-cg72-x35g-xfp8
• https://www.vulncheck.com/advisories/openbao-2.3.0-before-2.6.3-missing-root-namespace-enforcement-in-plugin-catalog-apis

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