CVE-2026-63131
OpenBao LIST ACL bypass: a trailing-slash LIST request skips a more-specific deny rule (unported Vault v2.0.3 fix)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | openbao |
| Product | openbao |
| Published | Sep 23, 2026 |
Stay Ahead of the Next One
Get instant alerts for openbao openbao
Be the first to know when new unknown vulnerabilities affecting openbao openbao are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
openbao / openbao
< 2.6.0
References
github.com: https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr github.com: https://github.com/openbao/openbao/pull/3389 github.com: https://github.com/openbao/openbao/pull/3474 github.com: https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a github.com: https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc github.com: https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203 github.com: https://github.com/openbao/openbao/releases/tag/v2.6.0