CVE-2026-45021
MEDIUM
5,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
Description
AI Translation Available
Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5, the default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: ['.*'] reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin. A cross-origin fetch() from a malicious page returns the admin JWT and signing material. This vulnerability is fixed in 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5.
346
Origin Validation Error
DraftCommon Consequences
Security Scopes Affected:
Access Control
Other
Potential Impacts:
Gain Privileges Or Assume Identity
Varies By Context
Applicable Platforms
Technologies:
Not Technology-Specific, Web Based
942
Permissive Cross-domain Security Policy with Untrusted Domains
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Availability
Access Control
Potential Impacts:
Execute Unauthorized Code Or Commands
Bypass Protection Mechanism
Read Application Data
Varies By Context
Applicable Platforms
Technologies:
Web Based, Web Server
https://github.com/kumahq/kuma/commit/8fefa8595d44eb68d922405702ed7a0826322907
https://github.com/kumahq/kuma/pull/16416
https://github.com/kumahq/kuma/pull/16423
https://github.com/kumahq/kuma/pull/16424
https://github.com/kumahq/kuma/pull/16425
https://github.com/kumahq/kuma/pull/16426
https://github.com/kumahq/kuma/pull/16427
https://github.com/kumahq/kuma/security/advisories/GHSA-3vcp-chfh-f6r2