2.1 LOW
- CVSS version (CVSS): 4.0
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Attack Requirement (AT): Present (P)
- Privileges Required (PR): High (H)
- User Interaction (UI): None (N)
- Vulnerable System Impact Confidentiality (VC): None (N)
- Vulnerable System Impact Integrity (VI): None (N)
- Vulnerable System Impact Availability (VA): Low (L)
- Subsequent System Impact Confidentiality (SC): None (N)
- Subsequent System Impact Integrity (SI): None (N)
- Subsequent System Impact Availability (SA): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Attack Requirement (MAT): Present (P)
- Modified Privileges Required (MPR): High (H)
- Modified User Interaction (MUI): None (N)
- Modified Vulnerable System Impact Confidentiality (MVC): None (N)
- Modified Vulnerable System Impact Integrity (MVI): None (N)
- Modified Vulnerable System Impact Availability (MVA): Low (L)
- Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
- Modified Subsequent System Impact Integrity (MSI): Negligible (N)
- Modified Subsequent System Impact Availability (MSA): Negligible (N)
- Safety (S): Not Defined (X)
- Automatable (AU): Not Defined (X)
- Recovery (R): Not Defined (X)
- Value Density (V): Not Defined (X)
- Vulnerability Response Effort (RE): Not Defined (X)
- Provider Urgency (U): Not Defined (X)
- Confidentiality Req. (CR): Not Defined (X)
- Integrity Req. (IR): Not Defined (X)
- Availability Req. (AR): Not Defined (X)
- Exploit Maturity (E): Not Defined (X)
Activity log
- Created suggestion
OpenBao: Cross-namespace lease revocation/renewal via canonical sys/leases/{revoke,renew} — incomplete fix of CVE-2026-45808
OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an OpenBao user with access to sys/leases/revoke/:lease_id in one namespace could revoke a lease in another namespace when the foreign lease_id was known, bypassing namespace ACL isolation. The affected lease lookup routing in vault/expiration.go allowed FetchLeaseInfo and loadEntry to resolve cached or stored lease data outside the request namespace, allowing a tenant that intentionally disclosed a lease identifier to have the lease and its underlying credential revoked by another tenant. This issue is fixed in version 2.5.5.
References
-
https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2 x_refsource_CONFIRM
-
https://github.com/openbao/openbao/pull/3307 x_refsource_MISC
-
https://github.com/openbao/openbao/pull/3310 x_refsource_MISC
-
https://github.com/openbao/openbao/releases/tag/v2.5.5 x_refsource_MISC
-
https://github.com/openbao/openbao/releases/tag/v2.6.0 x_refsource_MISC
Affected products
- ==< 2.5.5
Matching in nixpkgs
pkgs.openbao
Open source, community-driven fork of Vault managed by the Linux Foundation
pkgs.openbaoPlugins.kms-aws
OpenBao KMS plugin for Auto Unseal via AWS
-
nixos-unstable -
- nixos-unstable-small 0.1.0
pkgs.openbaoPlugins.kms-gcp
OpenBao KMS plugin for Auto Unseal via Google Cloud
-
nixos-unstable -
- nixos-unstable-small 0.1.0
pkgs.openbaoPlugins.kms-oci
OpenBao KMS plugin for Auto Unseal via Oracle Cloud
-
nixos-unstable -
- nixos-unstable-small 0.1.0
pkgs.openbaoPlugins.auth-aws
OpenBao auth plugin to authenticate using AWS IAM credentials
-
nixos-unstable -
- nixos-unstable-small 0.1.1
pkgs.openbaoPlugins.auth-gcp
OpenBao auth plugin to authenticate using Google Cloud Platform credentials
-
nixos-unstable -
- nixos-unstable-small 0.22.0
pkgs.openbaoPlugins.kms-azure
OpenBao KMS plugin for Auto Unseal via Azure
-
nixos-unstable -
- nixos-unstable-small 0.1.0
pkgs.openbaoPlugins.auth-azure
OpenBao auth plugin to authenticate using Microsoft Azure credentials
-
nixos-unstable -
- nixos-unstable-small 0.23.0
pkgs.openbaoPlugins.kms-pkcs11
OpenBao KMS plugin for Auto Unseal and External Keys via PKCS#11
-
nixos-unstable -
- nixos-unstable-small 0.2.1
pkgs.openbaoPlugins.auth-github
OpenBao auth plugin to authenticate using GitHub credentials
-
nixos-unstable -
- nixos-unstable-small 0.0.1
pkgs.openbaoPlugins.secrets-aws
OpenBao secrets plugin to generate AWS access credentials based on IAM policies
-
nixos-unstable -
- nixos-unstable-small 0.3.1
pkgs.openbaoPlugins.secrets-gcp
OpenBao secrets plugin to generate GCP service account keys and OAuth tokens based on IAM policies
-
nixos-unstable -
- nixos-unstable-small 0.23.1
pkgs.openbaoPlugins.kms-alicloud
OpenBao KMS plugin for Auto Unseal via AliCloud
-
nixos-unstable -
- nixos-unstable-small 0.1.1
pkgs.openbaoPlugins.kms-ovhcloud
OpenBao KMS plugin for Auto Unseal via OVHcloud
-
nixos-unstable -
- nixos-unstable-small 0.0.1
pkgs.openbaoPlugins.secrets-azure
OpenBao secrets plugin to generate Azure service principals with role and group assignments
-
nixos-unstable -
- nixos-unstable-small 0.23.0
pkgs.openbaoPlugins.secrets-nomad
OpenBao secrets plugin to generate Nomad ACL tokens
-
nixos-unstable -
- nixos-unstable-small 0.1.6
pkgs.openbaoPlugins.secrets-consul
OpenBao secrets plugin to generate Consul ACL tokens
-
nixos-unstable -
- nixos-unstable-small 0.1.1
pkgs.openbaoPlugins.secrets-gcpkms
OpenBao secrets plugin to encrypt data and manage keys via GCP KMS
-
nixos-unstable -
- nixos-unstable-small 0.21.0
pkgs.openbaoPlugins.database-mongodb
OpenBao database plugin to generate MongoDB database credentials
-
nixos-unstable -
- nixos-unstable-small 0.0.1
pkgs.openbaoPlugins.kms-tcloudpublic
OpenBao KMS plugin for Auto Unseal via T Cloud Public
-
nixos-unstable -
- nixos-unstable-small 0.0.1
pkgs.openbaoPlugins.secrets-oauthapp
OpenBao secrets plugin for OAuth 2.0 supporting a variety of grant types
-
nixos-unstable -
- nixos-unstable-small 3.4.0
Package maintainers
-
@emilylange Emily Lange <nix@emilylange.de>
-
@brianmay Brian May <brian@linuxpenguins.xyz>
-
@Kranzes Ilan Joselevich <personal@ilanjoselevich.com>