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CVE-2026-49445— Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access

Quick assessment

Affected
cilium cilium
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cilium是Cilium组织开源的一个开源软件。用于提供和透明地保护应用程序工作负载(如应用程序容器或进程)之间的网络连接和负载平衡。 Cilium存在权限许可和访问控制问题漏洞，该漏洞源于CWE-732权限许可和访问控制问题，当Cilium L7功能启用时，Envoy实例在集群节点上创建可全局访问的admin.sock，允许本地攻击者访问Envoy admin endpoints、暴露TLS secrets、破坏集群流量或终止Envoy。以下版本受到影响：1.17.14之前版本、1.18.0至1.18

CVSS 9.2 · Critical EPSS 0.17% · P5

Affected Version Matrix 3

VendorProduct Version RangeStatus
cilium cilium < 1.17.14 affected
>= 1.18.0, < 1.18.8 affected
>= 1.19.0, < 1.19.2 affected
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I. Basic Information for CVE-2026-49445

Vulnerability Information
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Vulnerability Title
Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access
Source: CVE Program / CVE List V5
Vulnerability Description
Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Cilium 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cilium是Cilium组织开源的一个开源软件。用于提供和透明地保护应用程序工作负载(如应用程序容器或进程)之间的网络连接和负载平衡。 Cilium存在权限许可和访问控制问题漏洞，该漏洞源于CWE-732权限许可和访问控制问题，当Cilium L7功能启用时，Envoy实例在集群节点上创建可全局访问的admin.sock，允许本地攻击者访问Envoy admin endpoints、暴露TLS secrets、破坏集群流量或终止Envoy。以下版本受到影响：1.17.14之前版本、1.18.0至1.18
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cilium cilium < 1.17.14 -

II. Public POCs for CVE-2026-49445

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III. Intelligence Information for CVE-2026-49445

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Patches & Fixes for CVE-2026-49445 (3)

Vendor Advisories for CVE-2026-49445 (1)

Vendor Pages for CVE-2026-49445 (2)

Same Patch Batch · cilium · 2026-07-15 · 3 CVEs total

CVE-2026-56742 5.9 MEDIUM Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces
CVE-2026-56743 5.4 MEDIUM Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes N

IV. Related Vulnerabilities

Same product: cilium
Same vendor: cilium
Same weakness: CWE-732

V. Comments for CVE-2026-49445

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