GHSA-PJP5-FPMR-3349 GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

Summary When running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL...

CVE-2026-54090

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.33.8, when a shell interpreter is configured e.g. /bin/sh -c, the command allowlist can be bypassed through shell metacharacters. The allowlist...

CVE-2026-53245

In the Linux kernel, the following vulnerability has been resolved: net/802/mrp: fix vector attribute parsing in mrppduparsevecattr In mrppduparsevecattr, vector attribute events are encoded three per byte and valen tracks the number of events left to process. The parser decrements valen after...

UBUNTU-CVE-2026-53240

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free on firstskb in inputprocesspayload inputprocesspayload stores firstskb into xtfs-ranewskb under droplock when starting partial reassembly, then unlocks and breaks out of the processing loop. The...

CVE-2026-53245

In the Linux kernel, the following vulnerability has been resolved: net/802/mrp: fix vector attribute parsing in mrppduparsevecattr In mrppduparsevecattr, vector attribute events are encoded three per byte and valen tracks the number of events left to process. The parser decrements valen after...

CVE-2026-53245 net/802/mrp: fix vector attribute parsing in mrp_pdu_parse_vecattr

In the Linux kernel, the following vulnerability has been resolved: net/802/mrp: fix vector attribute parsing in mrppduparsevecattr In mrppduparsevecattr, vector attribute events are encoded three per byte and valen tracks the number of events left to process. The parser decrements valen after...

CVE-2026-53240 xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free on firstskb in inputprocesspayload inputprocesspayload stores firstskb into xtfs-ranewskb under droplock when starting partial reassembly, then unlocks and breaks out of the processing loop. The...

CVE-2026-53240

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix use-after-free on firstskb in inputprocesspayload inputprocesspayload stores firstskb into xtfs-ranewskb under droplock when starting partial reassembly, then unlocks and breaks out of the processing loop. The...

CVE-2026-53095

A flaw was found in the Linux kernel. This vulnerability allows for the abuse of the kprobewritectx mechanism through freplace in Berkeley Packet Filter BPF kprobe programs. A local attacker could exploit this by attaching a freplace program to a kprobe program that is attached to a kernel...

PT-2026-52644

Name of the Vulnerable Software and Affected Versions GitHub MCP Server versions 0.22.0 through 1.1.1 Description When operating in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton. This singleton is initialized using the GraphQL client of t...

CVE-2026-53009

In the Linux kernel, the following vulnerability has been resolved: ice: fix double-free of txbuf skb If icetso or icetxcsum fail, the error path in icexmitframering frees the skb, but the 'first' txbuf still points to it and is marked as valid ICETXBUFSKB. 'nexttouse' remains unchanged, so the...

CVE-2026-53009 ice: fix double-free of tx_buf skb

In the Linux kernel, the following vulnerability has been resolved: ice: fix double-free of txbuf skb If icetso or icetxcsum fail, the error path in icexmitframering frees the skb, but the 'first' txbuf still points to it and is marked as valid ICETXBUFSKB. 'nexttouse' remains unchanged, so the...

Astra Linux – Vulnerability in libheif

libheif is a decoder and encoder for HEIF and AVIF file formats. In versions 1.21.2 and earlier, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc field could cause an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, causing all sampl...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: drbd: fixed the issue of null-pointer dereference during local read operations. In drbdrequestendio, READCOMPLETEDWITHERROR is passed to reqmod with a NULL peerdevice: c reqmodreq, what, NULL, &m; The handler for...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: Most of the issues related to early registration failures have been fixed. A recent commit corrected a resource leak that occurred during early registration failures. However, for some reason, the first error path was left...

Malicious code in macos-ci-utils (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 8f342b002e02396d7f82ee89e77140204c35b673411afd05bc1b3ca91c895a06 On first require of the package, index.js decodes a base64-encoded URL https://api.ingress-hub.com/cdn/assets/update.pkg and downloads the response t...

CVE-2026-6458 AES-256-GCM Authentication Tag Does Not Cover First Ciphertext Blocks When AAD Is Empty

Missing cryptographic step in Caliptra Core Firmware aes256gcmupdate module results in an incorrect GCM authentication tag. When the streaming AES-256-GCM API is used with empty AAD, the hardware GHASH accumulator state is not saved after the first update call, causing the final tag to exclude th...

Improper Authentication

Kirby is vulnerable to Improper Authentication. The vulnerability is due to incorrect trust of the Forwarded, X-Client-IP, and X-Real-IP request headers during local IP validation, which allows a remote attacker to bypass the installation restriction and create the first administrator account on...

TRACE: A Threat Modelling Methodology for Distributed, Cloud-First, and Decentralized Organisations

Established threat modelling methodologies STRIDE, PASTA, Trike, OCTAVE, LINDDUN, attack trees, and adversary-behaviour catalogues such as MITRE ATT&CK were designed for software products and enterprises with a discernible security perimeter, a single owning organisation, and a clean separation...

CVE-2026-48773

ProxySQL is a proxy for MySQL and its forks, as well as PostgreSQL. Versions 2.0.18 through 3.0.8 have a pre-authentication heap memory corruption vulnerability in the MySQL and PostgreSQL protocol first-read paths. A remote unauthenticated client can declare an oversized first packet length, and...