UBUNTU-CVE-2026-12259

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

CVE-2026-12259

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

CVE-2026-12259

The CVE affects nltk 3.9.4: nltk.downloader.Downloader._download_package() can write package bytes to disk and may extract them before SHA-256/MD5 checks, enabling tampering via compromised mirrors or proxies. This could lead to installation of attacker-controlled package bytes (potentially malic...

Improper Validation of Integrity Check Value

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in nltk/downloader.py through the Downloader.downloadpackage download-and-extract flow. An attacke...

CVE-2026-12259 Improper Input Validation in nltk/nltk

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

CVE-2026-12259

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

CVE-2026-12259 Improper Input Validation in nltk/nltk

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

PT-2026-67013

Name of the Vulnerable Software and Affected Versions nltk version 3.9.4 Description The nltk.downloader.Downloader. download package function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with t...

CVE-2026-12259: Download of Code Without Integrity Check

In nltk version 3.9.4, the nltk.downloader.Downloader.downloadpackage function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for info.url through a compromised...

Silver Fox Targets Japanese Manufacturer with 3-Driver BYOVD Chain and ValleyRAT

The Chinese cybercrime group known as Silver Fox has been observed using new drivers as part of bring your own vulnerable driver BYOVD attacks targeting a Japanese organization in the industrial manufacturing sector to ultimately deliver ValleyRAT aka Winos 4.0 for persistent remote access. "In...

MAL-2026-11144 Malicious code in react-puller (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector a3ac07c0f6c79714a7b1f6bfd1272f9f7942cf0473875ca5276a1034c084f06d The package's postinstall hook runs node index.js, which spawns a detached worker that downloads two Windows executables CDPUserPlatform.exe and...

Operation BlueDash Deploys Level RMM and ScreenConnect via Fake Teams Update

Cybersecurity researchers have flagged a Microsoft Teams-themed phishing campaign that employs "secure document" lures to deliver legitimate remote monitoring and management RMM tools. "The victim was directed through compromised web infrastructure to a counterfeit Microsoft Store page claiming...

Fake Notepad++ Plugin Delivers MATCHBOIL.V2 in UAC-0099 Attacks

The Computer Emergency Response Team of Ukraine CERT-UA has warned of a new campaign that involves the use of a malicious program that's dressed up as a Notepad++ plugin to compromise Windows systems. The activity has been attributed by the agency to a threat cluster it tracks as UAC-0099 , a...

MAL-2026-10915 Malicious code in dwh-kafka-client (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 64f8759150fd0f4909a75613b1311c70c44b514bee2142ed4c67e0ef580afdbe The pypi package dwh-kafka-client 0.0.1 presents itself as a Kafka client but ships no Kafka functionality — the advertised DwhKafkaClient class in...

Information Exposure

Overview cyberdrop-dl-patched is a Bulk downloader for multiple file hosts Affected versions of this package are vulnerable to Information Exposure via the Authorization header when processing URLs. An attacker can obtain sensitive API keys by submitting malicious URLs that are incorrectly matche...

yt-dlp: File Downloader cookie leak with curl

SummaryIf curl is used an external downloader for yt-dlp, cookies may be leaked to an unintended host upon HTTP redirect or when the host for download fragments differs from their parent manifest's.This is the equivalent to GHSA-v8mc-9377-rwjj for the curl downloader. The vulnerable behavior is...

mcp-url-downloader has a Server-Side Request Forgery issue

A vulnerability has been found in dmitryglhf mcp-url-downloader up to 4b8cf2de55f6e8864a77d108e8a94a5b8e4394c6. Affected by this issue is the function validateurlsafe of the file src/mcpurldownloader/server.py. Such manipulation of the argument url leads to server-side request forgery. The attack...

PYSEC-2026-2631 mcp-url-downloader has a Server-Side Request Forgery issue

A vulnerability has been found in dmitryglhf mcp-url-downloader up to 4b8cf2de55f6e8864a77d108e8a94a5b8e4394c6. Affected by this issue is the function validateurlsafe of the file src/mcpurldownloader/server.py. Such manipulation of the argument url leads to server-side request forgery. The attack...

PT-2026-60042

Summary If aria2c is used as an external downloader for a fragmented manifest format such as an HLS/DASH stream, yt-dlp passes insufficiently sanitized input to aria2c that allows an attacker to perform an arbitrary file write. On Windows platforms, this can lead to immediate arbitrary code...

PT-2026-59281

A vulnerability has been found in dmitryglhf mcp-url-downloader up to 4b8cf2de55f6e8864a77d108e8a94a5b8e4394c6. Affected by this issue is the function validate url safe of the file src/mcp url downloader/server.py. Such manipulation of the argument url leads to server-side request forgery. The...