CVE-2026-63131: Auth Bypass

Description

OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, OpenBao's vault/policy/acl.go could evaluate a broader wildcard ACL grant before more-specific trailing-wildcard ACL paths with capabilities = ["deny"] for a LIST operation. When a parent path permitted LIST and a child path was denied, the trailing-slash lookup could therefore allow listing the denied path. Other operation types are outside the repository advisory's affected scope. This issue is fixed in version 2.6.0.

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Weakness Type (CWE)

CWE-863 Incorrect Authorization

References

Other References

https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203 https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc https://github.com/openbao/openbao/pull/3389 https://github.com/openbao/openbao/pull/3474 https://github.com/openbao/openbao/releases/tag/v2.6.0 https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr

Frequently Asked Questions

What is CVE-2026-63131? +

OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, OpenBao's vault/policy/acl.go could evaluate a broader wildcard ACL grant before more-specific trailing-wildcard ACL paths with capabilities = ["deny"] for a LIST operation. When a parent path permitted LIST and a child path was denied, the trailing-slash lookup could therefore allow listing the denied path. Other operation types are outside the repository advisory's affected scope. This issue is fixed in version 2.6.0.

How do I check if I'm vulnerable to CVE-2026-63131? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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