justhtml: Mutation XSS with custom foreign-namespace sanitization policies

Summary A parser-differential / mutation XSS issue was found in justhtml when using a custom sanitization policy that preserves foreign namespaces such as SVG or MathML. Under these custom settings, specially crafted input could sanitize into HTML that looked safe at first, but became unsafe when...

Cross-site Scripting (XSS)

Overview justhtml is an A pure Python HTML5 parser that just works. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the custom SanitizationPolicy if configured with dropforeignnamespaces=False or allowlisted foreign elements such as MathML or SVG or raw-text...

CVE-2026-35405

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, libp2p-rendezvous server has no limit on how many namespaces a single peer can register. A malicious peer can just keep registering unique namespaces in a loop and the server happily accepts...

CVE-2026-35405 libp2p-rendezvous: Unlimited namespace registrations per peer enables OOM DoS on rendezvous servers

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, libp2p-rendezvous server has no limit on how many namespaces a single peer can register. A malicious peer can just keep registering unique namespaces in a loop and the server happily accepts...

CVE-2026-35405

libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, libp2p-rendezvous server has no limit on how many namespaces a single peer can register. A malicious peer can just keep registering unique namespaces in a loop and the server happily accepts...

CVE-2026-35405

CVE-2026-35405 (libp2p-rendezvous) : The Red Hat/NVD et al. documents describe a vulnerability in libp2p-rendezvous where the server has no limit on how many namespaces a single peer can register. As a result, a malicious or multiple sybil peers can repeatedly register unique namespaces, each reg...

rust-libp2p 安全漏洞

rust-libp2p is a Rust implementation of the libp2p open-source network stack. Prior to version 0.17.1, rust-libp2p had a security vulnerability. This vulnerability stemmed from the unlimited number of namespaces that rendezvous servers could register for individual peers, which could lead to memo...

Linux Distros Unpatched Vulnerability : CVE-2026-23405

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit...

SUSE CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

A flaw was found in the AppArmor security module within the Linux kernel. A local user could exploit this vulnerability by creating and nesting policy namespaces without limit. This unbounded nesting can lead to the exhaustion of system resources, resulting in a Denial of Service DoS for the...

EUVD-2026-17833

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

UBUNTU-CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405 apparmor: fix: limit the number of levels of policy namespaces

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

CVE-2026-23405 concerns the Linux kernel AppArmor feature where policy namespaces could be nested arbitrarily deep, potentially exhausting system resources. The vulnerability arises because policy namespaces were not bounded by the user namespace depth, and are not strictly tied to user namespace...

CVE-2026-23405 apparmor: fix: limit the number of levels of policy namespaces

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23405: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...