CVE-2026-63131OpenBao LIST ACL bypass: a trailing-slash LIST request skips a more-specific deny rule (unported Vault v2.0.3 fix)
Updated under an hour ago ()
Does this affect you?
It affects openbao. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 6.0 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openbao openbao openbao:openbao (from the name) | before 2.6.0 | CNA record |
References
- https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcrx-refsource-confirm
- https://github.com/openbao/openbao/pull/3389x-refsource-misc
- https://github.com/openbao/openbao/pull/3474x-refsource-misc
- https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6ax-refsource-misc
- https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fcx-refsource-misc
- https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203x-refsource-misc
- https://github.com/openbao/openbao/releases/tag/v2.6.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.