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First Malicious MCP Server Found Stealing Emails in Rogue Postmark-MCP Package

Cybersecurity researchers have discovered what has been described as the first-ever instance of a Model Context Protocol (MCP) server spotted in the wild, raising software supply chain risks. According to Koi Security, a legitimate-looking developer managed to slip in rogue code within an npm package called "postmark-mcp" that copied an official Postmark Labs library of the same name. The

The Hacker News
#vulnerability#google#nodejs#git#java#intel#backdoor#The Hacker News
A week in security (September 22 – September 28)

A list of topics we covered in the week of September 22 to September 28 of 2025

GHSA-cr7q-2w66-hjcm: llama-index-core insecurely handles temporary files

The llama-index-core package, up to version 0.12.44, contains a vulnerability in the `get_cache_dir()` function where a predictable, hardcoded directory path `/tmp/llama_index` is used on Linux systems without proper security controls. This vulnerability allows attackers on multi-user systems to steal proprietary models, poison cached embeddings, or conduct symlink attacks. The issue affects all Linux deployments where multiple users share the same system. The vulnerability is classified under CWE-379, CWE-377, and CWE-367, indicating insecure temporary file creation and potential race conditions.

An App Used to Dox Charlie Kirk Critics Doxed Its Own Users Instead

Plus: A ransomeware gang steals data on 8,000 preschoolers, Microsoft blocks Israel’s military from using its cloud for surveillance, call-recording app Neon hits pause over security holes, and more.

China-Linked PlugX and Bookworm Malware Attacks Target Asian Telecom and ASEAN Networks

Telecommunications and manufacturing sectors in Central and South Asian countries have emerged as the target of an ongoing campaign distributing a new variant of a known malware called PlugX (aka Korplug or SOGU). "The new variant's features overlap with both the RainyDay and Turian backdoors, including abuse of the same legitimate applications for DLL side-loading, the

Inside the Nuclear Bunkers, Mines, and Mountains Being Retrofitted as Data Centers

Companies are going to great lengths to protect the infrastructure that provides the backbone of the world’s digital services—by burying their data deep underground.

GHSA-fmjh-f678-cv3x: github.com/nyaruka/phonenumbers Vulnerable to Improper Validation of Syntactic Correctness of Input

Versions of the package github.com/nyaruka/phonenumbers before 1.2.2 are vulnerable to Improper Validation of Syntactic Correctness of Input in the phonenumbers.Parse() function. An attacker can cause a panic by providing crafted input causing a "runtime error: slice bounds out of range".

Heritage Foundation Uses Bogus Stat to Push a Trans Terrorism Classification

By inflating numbers and narrowing definitions, Heritage promotes a false link between transgender identity and violence in its push for the FBI to create a new terrorism category.

Google Ads Used to Spread Trojan Disguised as TradingView Premium

Bitdefender warns that the TradingView Premium ad scam now targets Google ads and YouTube, hijacking verified channels to spread spyware.