Security Vulnerabilities - CVEs Published In July 2026
CVE-2026-55399 is a resource exhaustion
vulnerability in the Secure Access publisher prior to 14.55. Attackers with
valid credentials to the Secure Access tunnel can create a non-persistent DoS
against the publisher.
CVSS Score
5.1
EPSS Score
0.002
Published
2026-07-15
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.57.4, multi-tenant HTTP mode with ENABLE_MULTI_TENANT=true could allow an authenticated tenant to access default-scope workflow_versions backups instead of being confined to the tenant scope, exposing or deleting workflow-version backups from prior single-tenant deployments or migrations. This issue is fixed in version 2.57.4.
CVSS Score
4.2
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). Prior to 1.28.1, the deprecated mcp.server.websocket.websocket_server transport accepted WebSocket handshakes without applying Host or Origin header validation, leaving no SDK-level way to restrict which origins could connect to applications that exposed that transport. This issue is fixed in version 1.28.1.
CVSS Score
7.6
EPSS Score
0.002
Published
2026-07-15
CVE-2026-55398
is a memory management vulnerability in Secure Access clients and servers prior
to 14.55. Attackers with intimate knowledge of and total control over the
tunnel protocol can create a non-persistent DoS against the server.
CVSS Score
6.9
EPSS Score
0.002
Published
2026-07-15
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.56.1, in HTTP mode with multi-tenancy enabled through ENABLE_MULTI_TENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an authenticated tenant to read workflow version snapshots belonging to other tenants and delete or destroy other tenants' stored backups, including full node definitions, credential references, and authorization headers. This issue is fixed in version 2.56.1.
CVSS Score
9.9
EPSS Score
0.004
Published
2026-07-15
CVE-2026-33444 is a memory management
vulnerability in Secure Access servers prior to 14.55. Attackers with intimate
knowledge of and total control over the tunnel protocol can create a
non-persistent DoS against the server.
CVSS Score
6.9
EPSS Score
0.003
Published
2026-07-15
CVE-2026-33445 is a memory management
vulnerability in Secure Access servers prior to 14.55. Attackers with an
intimate knowledge of and total control over the tunnel protocol can create a
persistent DoS against the server.
CVSS Score
8.7
EPSS Score
0.002
Published
2026-07-15
A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted AWK script.
CVSS Score
4.9
EPSS Score
0.003
Published
2026-07-15
Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Service in any namespace, bypassing the ReferenceGrant authorization mechanism. Gateway API functionality is disabled by default. This issue is fixed in versions 1.17.17, 1.18.11, and 1.19.5.
CVSS Score
5.9
EPSS Score
0.002
Published
2026-07-15
Cilium is a networking, observability, and security solution. From 1.19.0 to 1.19.4, standard Kubernetes NetworkPolicy specifications using CIDR-based ipBlock rules without pod or namespace selectors erroneously generate a wildcard namespace allow rule when Cilium is configured with a custom clusterName rather than the default any value. The parser incorrectly instantiates a pod selector on selectorless peer definitions, allowing traffic from other workloads in the same namespace as the subject of the policy. This issue is fixed in version 1.19.5.
CVSS Score
5.4
EPSS Score
0.002
Published
2026-07-15