CVE-2026-56179 Windows Network Address Translation (NAT) Spoofing Vulnerability

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CVE-2026-56179: Origin Validation Error

Origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network...

CVE-2026-72761

The CVE affects the webhook URL validator in website/notifications/webhooks.py, which uses ip.is_global after DNS resolution. IPv6 transition addresses (NAT64 64:ff9b::/96, 6to4 2002::/16, Teredo 2001:0000::/32) are categorized as globally routable by IANA, causing is_global to return True even w...

PYSEC-2026-3645 Open WebUI: Any authenticated user can reach internal services and cloud metadata via NAT64-encoded URLs

Summary Open WebUI fetches user-supplied URLs on the server for RAG URL ingestion, URL-to-markdown conversion and web-search content retrieval, and decides whether a destination is allowed by asking whether its IP address is globally routable. That test operates on the literal IPv6 address and do...

Important: Red Hat Security Advisory: osbuild-composer security update

An update for osbuild-composer is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

penetration-testing-windows10

Vulnerability Analysis and Penetration Testing Using Metasploi...

SUSE 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...

PT-2026-66529

DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.4, is url safe in src/helpers.ts strips the @ userinfo delimiter with remove at symbol in string before new URL parses the URL, allowing an attacker-controlled URL to bypass internal-...

CVE-2026-54272

The CVE affects the ip-address JavaScript library (versions 10.1.1–10.2.0). A misclassification of IPv4-mapped/NAT64 IPv6 addresses in Address6.getType() caused SSRF and trust-boundary issues by not normalizing mapped addresses to IPv4 before checks, due to the IPv6 special-use prefix table missi...

RHEL 9 : Satellite 6.17.9.1 Async Update (Important) (RHSA-2026:42150)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:42150 advisory. Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity t...

CVE-2026-63913

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state using an RST packet with an...

CVE-2026-63913

The CVE-2026-63913 entry concerns the Linux kernel netfilter conntrack TCP state machine. A crafted RST with an invalid SEQ after observing a SYN could transition the conntrack entry to TCP_CONNTRACK_CLOSE, even if the RST is not a valid response to the observed SYN or its direction. This could p...

PT-2026-61230

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state via an RST packet with an invalid sequence number. After a SYN packet is...

CVE-2026-56181 Windows Network Address Translation (NAT) Spoofing Vulnerability

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CVE-2026-56181 Windows Network Address Translation (NAT) Spoofing Vulnerability

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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-2026-44294

Use after free in Microsoft NAT Helper Components ipnathlp.dll allows an authorized attacker to elevate privileges locally...

Windows Network Address Translation (NAT) Spoofing Vulnerability

Origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network...

PT-2026-58599

Name of the Vulnerable Software and Affected Versions Windows Network Address Translation NAT affected versions not specified Description An origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network, enabling th...

CVE-2026-56181: Origin Validation Error

Origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network...