Security Vulnerabilities - CVEs Published In 2026
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to 1.27.2, the SSE and stateful Streamable HTTP transports mcp.server.sse.SseServerTransport and mcp.server.streamable_http_manager.StreamableHTTPSessionManager route requests to existing sessions using only the session_id query parameter or Mcp-Session-Id header without verifying the authenticated principal that created the session, allowing a different bearer-token-authenticated client with a known session ID to inject JSON-RPC messages into that session. This issue is fixed in version 1.27.2.
CVSS Score
7.1
EPSS Score
0.003
Published
2026-07-15
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). From 1.23.0 until 1.27.2, default handlers installed by server.experimental.enable_tasks() for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recording the session that created each task, allowing any connected client to enumerate, read results from, consume messages for, or cancel other clients' tasks. This issue is fixed in version 1.27.2.
CVSS Score
7.6
EPSS Score
0.002
Published
2026-07-15
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.
CVSS Score
9.2
EPSS Score
0.002
Published
2026-07-15
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user's authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
CVSS Score
7.3
EPSS Score
0.003
Published
2026-07-15
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 3.2.0 until 3.2.12, 3.3.10, and 3.4.2, Argo CD ServerSideDiff can expose Kubernetes Secret values embedded in the kubectl.kubernetes.io/last-applied-configuration annotation because HideSecretData(target, live, ...) does not fully sanitize ResourceDiff.TargetState and LiveState predicted live Secret objects, allowing sensitive data, stringData, and annotations to appear in UI or CLI diffs. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
CVSS Score
6.3
EPSS Score
0.003
Published
2026-07-15
CVE-2026-40956
is a memory disclosure vulnerability in Secure Access client versions prior to 14.55.
Attackers with intimate knowledge of and total control over the tunnel protocol
can cause a small amount of random memory to leak.
CVSS Score
2.1
EPSS Score
0.002
Published
2026-07-15
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CVE-2026-40957 is a frameable content
vulnerability in the Secure Access server login page prior to 14.55. Attackers
with control of a malicious web site could use it to potentially steal
credentials from an unwary administrator.
CVSS Score
6.1
EPSS Score
0.003
Published
2026-07-15
CVE-2026-40958
is a input validation error in Secure Access clients prior to 14.55. Attackers
with intimate knowledge of and total control over the tunnel protocol can
create a non-persistent DoS against their client.
CVSS Score
2.3
EPSS Score
0.002
Published
2026-07-15
CVE-2026-40955 is an integer underflow
vulnerability in the traffic parsing function of Secure Access clients prior to
14.55. Attackers with intimate knowledge of and total control over the tunnel
protocol can create a non-persistent DoS against their client.
CVSS Score
2.1
EPSS Score
0.002
Published
2026-07-15
CVE-2026-40953 is a heap overflow in the
certificate parsing function of Secure Access clients prior to 14.55. Attackers
with local access and administrator permissions can create a denial of service
attack against the client over which they have control.
CVSS Score
6.7
EPSS Score
0.001
Published
2026-07-15