CVE-2026-56181

CVE-2026-56181 is a Windows Network Address Translation (NAT) spoofing vulnerability caused by an origin-validation error. It enables an adjacent-network attacker to impersonate a user on the NATed network, with high impact (code/privilege implications per report). Microsoft has released updates;...

EUVD-2026-36599

Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing...

GHSA-X6FG-52VR-HJ4W Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing

Summary An authenticated non-admin user who owns any server can create or update a NAT profile whose domain is equal to the dashboard's own HTTP Host for example, dashboard.example:8008. The dashboard's top-level HTTP/gRPC multiplexer checks NATShared.GetNATConfigByDomainr.Host before dispatching...

CVE-2026-53000

A flaw was found in the Linux kernel's netfilter component, specifically within the Network Address Translation NAT subsystem. This vulnerability involves improper memory management when releasing network filter operation structures. This could potentially allow an attacker to cause a system cras...

CVE-2026-53000 netfilter: nat: use kfree_rcu to release ops

In the Linux kernel, the following vulnerability has been resolved: netfilter: nat: use kfreercu to release ops Florian Westphal says: "Historically this is not an issue, even for normal base hooks: the data path doesn't use the original nfhookops that are used to register the callbacks. However,...

CVE-2026-53520

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0...

CVE-2026-53520 Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0...

CVE-2026-53520 Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0...

CVE-2026-53520

Nezha Monitoring before 2.1.0 (vulnerable 2.0.14–pre-2.1.0) allows authenticated users to claim the dashboard Host via NAT and preempt all dashboard routing. CVSS 3.1 base score 6.5 (I: None, A: High). Patch: upgrade to 2.1.0. If upgrading is not feasible, apply the vendor advisory guidance from ...

PT-2026-49002

Name of the Vulnerable Software and Affected Versions Nezha Monitoring versions 2.0.14 through 2.0.99 Description Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. Recommendations Update to version 2.1.0...

CVE-2026-49475

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, a STUN packet whose declared attribute length is shorter than the structure the parser...

CVE-2026-48132

The Security Gateway does not correctly validate a length value in certain IKE packets when NAT-T is used 4500/UDP. As a result, a specially crafted or malformed packet can cause the VPN processing service to terminate unexpectedly, leading to denial of service temporary interruption of VPN...

GHSA-5JH9-2H63-PW4Q CC-Tweaked has an SSRF Protection Bypass with NAT64

Summary CC-Tweaked's HTTP API http.request, http.websocket blocks requests to private network ranges to prevent server-side request forgery SSRF. This protection can be bypassed on IPv6-capable servers using NAT64 well-known prefix addresses 64:ff9b::/96. An attacker who can execute Lua code can...

CC-Tweaked has an SSRF Protection Bypass with NAT64

CC-Tweaked's HTTP API http.request, http.websocket blocks requests to private network ranges to prevent server-side request forgery SSRF. This protection can be bypassed on IPv6-capable servers using NAT64 well-known prefix addresses 64:ff9b::/96. An attacker who can execute Lua code can reach an...

CVE-2026-48132

The Security Gateway does not correctly validate a length value in certain IKE packets when NAT-T is used 4500/UDP. As a result, a specially crafted or malformed packet can cause the VPN processing service to terminate unexpectedly, leading to denial of service temporary interruption of VPN...

CVE-2026-48132

The CVE-2026-48132 entry describes a vulnerability in Security Gateway where length values in certain IKE packets over NAT-T (UDP/4500) are not validated correctly. This can cause the VPN processing service to terminate unexpectedly, resulting in a denial-of-service (temporary interruption of VPN...

CVE-2026-44430 MCP Registry: Unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.7, the Registry's HTTP-based namespace verification POST /v0/auth/http, POST /v0.1/auth/http uses safeDialContext internal/api/handlers/v0/auth/http.go:67-110 to refuse dialling...

CVE-2026-43026

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: zero expect NAT fields when CTAEXPECTNAT absent ctnetlinkallocexpect allocates expectations from a non-zeroing slab cache via nfctexpectalloc. When CTAEXPECTNAT is not present in the netlink message, savedad...

CVE-2026-43026

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: zero expect NAT fields when CTAEXPECTNAT absent ctnetlinkallocexpect allocates expectations from a non-zeroing slab cache via nfctexpectalloc. When CTAEXPECTNAT is not present in the netlink message, savedad...

EUVD-2026-26625

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: zero expect NAT fields when CTAEXPECTNAT absent ctnetlinkallocexpect allocates expectations from a non-zeroing slab cache via nfctexpectalloc. When CTAEXPECTNAT is not present in the netlink message, savedad...