CVE-2026-63131
When a parent path permitted LIST and a child path was denied, the trailing-slash lookup could therefore allow listing the denied path.
Does this matter?
Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.0 MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.48% probability · 41th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Source
- security-advisories@github.com
EPSS moved from 0.4% on 24 September 2026 to 0.5% on 26 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.