CVE - CVE-2025-23047

CVE-ID
CVE-2025-23047	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An insecure default `Access-Control-Allow-Origin` header value could lead to sensitive data exposure for users of Cilium versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4 who deploy Hubble UI using either Cilium CLI or via the Cilium Helm chart. A user with access to a Hubble UI instance affected by this issue could leak configuration details about the Kubernetes cluster which Hubble UI is monitoring, including node names, IP addresses, and other metadata about workloads and the cluster networking configuration. In order for this vulnerability to be exploited, a victim would have to first visit a malicious page. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. As a workaround, users who deploy Hubble UI using the Cilium Helm chart directly can remove the CORS headers from the Helm template as shown in the patch from commit a3489f190ba6e87b5336ee685fb6c80b1270d06d.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/cilium/cilium/commit/a3489f190ba6e87b5336ee685fb6c80b1270d06d URL:https://github.com/cilium/cilium/commit/a3489f190ba6e87b5336ee685fb6c80b1270d06d MISC:https://github.com/cilium/cilium/security/advisories/GHSA-h78m-j95m-5356 URL:https://github.com/cilium/cilium/security/advisories/GHSA-h78m-j95m-5356
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20250110	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250110)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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