PYSEC-2026-2485 FastChat has a Content Moderation Bypass via Arena Side-by-Side Views

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

FastChat has a Content Moderation Bypass via Arena Side-by-Side Views

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function addtext of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

PT-2026-59151

A vulnerability was detected in lm-sys fastchat up to 0.2.36. Impacted is the function add text of the component Arena Side-by-Side View Handler. The manipulation results in incorrect control flow. The attack can be launched remotely. The exploit is now public and may be used. The root cause was...

CVE-2026-59225

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The...

CVE-2026-59225

Open WebUI vulnerability CVE-2026-59225 affects versions 0.8.12 up to before 0.10.0. An authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model via task endpoints like /api/v1/tasks/moa/completions. The normal chat flow re-checks submodel ac...

CVE-2026-59225 Open WebUI: Arena task endpoints can bypass underlying model access controls

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The...

CVE-2026-59225 Open WebUI: Arena task endpoints can bypass underlying model access controls

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The...

PT-2026-56888

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.12 through 0.9.x Description An authenticated non-admin user with read access to an arena wrapper model can access a restricted underlying model. This occurs because task endpoints, such as...

PYSEC-2026-684 Memory leak in Nanopb

Impact Decoding specifically formed message can leak memory if dynamic allocation is enabled and an oneof field contains a static submessage that contains a dynamic field, and the message being decoded contains the submessage multiple times. This is rare in normal messages, but it is a concern wh...

Linux Distros Unpatched Vulnerability : CVE-2026-53031

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds...

SUSE CVE-2026-53031

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

CVE-2026-53031

A flaw was found in the Linux kernel. The arenaallocpages function within the Berkeley Packet Filter BPF subsystem does not properly validate the nodeid parameter. A local attacker could exploit this vulnerability by supplying an invalid nodeid, which is then used without bounds checking during...

EUVD-2026-38899

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

CVE-2026-53031

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

CVE-2026-53031

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

CVE-2026-53031 bpf: Validate node_id in arena_alloc_pages()

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

CVE-2026-53031

The CVE-2026-53031 issue affects the Linux kernel BPF unit: arena_alloc_pages() accepts a plain int node_id and forwards it through the allocation chain without bounds checks. A fix validates node_id before passing it down, mitigating potential memory corruption that could lead to DoS or instabil...

CVE-2026-53031 bpf: Validate node_id in arena_alloc_pages()

In the Linux kernel, the following vulnerability has been resolved: bpf: Validate nodeid in arenaallocpages arenaallocpages accepts a plain int nodeid and forwards it through the entire allocation chain without any bounds checking. Validate nodeid before passing it down the allocation chain in...

PT-2026-51925

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF Berkeley Packet Filter subsystem where the arena alloc pages function accepts an integer node id and forwards it through the allocation chain without performin...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed a use-after-free in arenavmclose when processing forks. The arenavmopen function only increments vml-mmapcount, but never registers the child VMA in arena-vmalist. vml-vma always points to the parent VMA; therefore,...