CVE-2026-13323

A flaw was found in Open VSX Registry. The /vscode/unpkg/ endpoint serves user-supplied HTML files with a Content-Type of text/html without Content-Security-Policy or Content-Disposition: attachment response headers. An attacker with a registered publisher account can upload a VSIX containing a...

CVE-2026-13323

Open VSX Registry before 1.0.2 is affected by a vulnerability in the /vscode/unpkg/ endpoint that serves user-supplied HTML with Content-Type: text/html and without a Content-Security-Policy or Content-Disposition header. An unauthenticated attacker can create a publisher account, upload a VSIX c...

CVE-2026-4983

Open VSX Registry does not sanitize SVG files uploaded as extension icons prior to storage, and serves them with Content-Type: image/svg+xml without security headers such as Content-Security-Policy or Content-Disposition: attachment. This allows an attacker to publish an extension with a maliciou...

CVE-2026-4983

CVE-2026-4983 affects the Open VSX Registry where SVG icons uploaded as extensions are not sanitized before storage and are served as image/svg+xml without security headers. This enables stored cross-site scripting (XSS) when users navigate to the icon URL. The impact differs by deployment: on lo...

CVE-2026-48027 Compromised Nx Console version 18.95.0

Nx Console is the user interface for Nx & Lerna. On 19 May 2026, a malicious version of Nx Console, 18.95.0, was published at 12:30 PM UTC and removed soon after at 12:48 PM UTC, leaving it available for 18 minutes in Visual Studio Marketplace. For OpenVSX, the problem was detected later, and the...

GlassWorm Malware Takedown Disrupts Developer Supply Chain Attack Infrastructure

CrowdStrike, in partnership with Google and the Shadowserver Foundation, has announced the simultaneous disruption of all command-and-control C2 channels associated with GlassWorm, a persistent software chain campaign targeting software developers through malicious packages and extensions. "Since...

GlassWorm Campaign Uses Zig Dropper to Infect Multiple Developer IDEs

Cybersecurity researchers have flagged yet another evolution of the ongoing GlassWorm campaign, which employs a new Zig dropper that's designed to stealthily infect all integrated development environments IDEs on a developer's machine. The technique has been discovered in an Open VSX extension...

Open VSX Bug Let Malicious VS Code Extensions Bypass Pre-Publish Security Checks

Cybersecurity researchers have disclosed details of a now-patched bug impacting Open VSX's pre-publish scanning pipeline to cause the tool to allow a malicious Microsoft Visual Studio Code VS Code extension to pass the vetting process and go live in the registry. "The pipeline had a single boolea...

GlassWorm Supply-Chain Attack Abuses 72 Open VSX Extensions to Target Developers

Cybersecurity researchers have flagged a new iteration of the GlassWorm campaign that they say represents a "significant escalation" in how it propagates through the Open VSX registry. "Instead of requiring every malicious listing to embed the loader directly, the threat actor is now abusing...

CVE-2026-28353

Trivy Vulnerability Scanner is a VS Code extension that helps find vulnerabilities. In Trivy VSCode Extension version 1.8.12, which was distributed via OpenVSX marketplace was compromised and contained malicious code designed to leverage local AI coding agent to collect and exfiltrate sensitive...

PT-2026-23503

Name of the Vulnerable Software and Affected Versions Trivy Vulnerability Scanner VS Code Extension version 1.8.12 Description The Trivy Vulnerability Scanner VS Code extension was compromised with malicious code in version 1.8.12, distributed through the OpenVSX marketplace. This malicious code...

Eclipse Foundation Mandates Pre-Publish Security Checks for Open VSX Extensions

The Eclipse Foundation, which maintains the Open VSX Registry, has announced plans to enforce security checks before Microsoft Visual Studio Code VS Code extensions are published to the open-source repository to combat supply chain threats. The move marks a shift from a reactive to a proactive...

Open VSX Supply Chain Attack Used Compromised Dev Account to Spread GlassWorm

Cybersecurity researchers have disclosed details of a supply chain attack targeting the Open VSX Registry in which unidentified threat actors compromised a legitimate developer's resources to push malicious updates to downstream users. "On January 30, 2026, four established Open VSX extensions...

VS Code Forks Recommend Missing Extensions, Creating Supply Chain Risk in Open VSX

Popular artificial intelligence AI-powered Microsoft Visual Studio Code VS Code forks such as Cursor, Windsurf, Google Antigravity, and Trae have been found to recommend extensions that are non-existent in the Open VSX registry, potentially opening the door to supply chain risks when bad actors...

GlassWorm Returns with 24 Malicious Extensions Impersonating Popular Developer Tools

The supply chain campaign known as GlassWorm has once again reared its head, infiltrating both Microsoft Visual Studio Marketplace and Open VSX with 24 extensions impersonating popular developer tools and frameworks like Flutter, React, Tailwind, Vim, and Vue. GlassWorm was first documented in...

GlassWorm Malware Discovered in Three VS Code Extensions with Thousands of Installs

Cybersecurity researchers have disclosed a new set of three extensions associated with the GlassWorm campaign, indicating continued attempts on part of threat actors to target the Visual Studio Code VS Code ecosystem. The extensions in question, which are still available for download, are listed...

Malicious VSX Extension "SleepyDuck" Uses Ethereum to Keep Its Command Server Alive

Cybersecurity researchers have flagged a new malicious extension in the Open VSX registry that harbors a remote access trojan called SleepyDuck. According to Secure Annex's John Tuckner, the extension in question, juan-bianco.solidity-vlang version 0.0.7, was first published on October 31, 2025, ...

Self-Spreading 'GlassWorm' Infects VS Code Extensions in Widespread Supply Chain Attack

Cybersecurity researchers have discovered a self-propagating worm that spreads via Visual Studio Code VS Code extensions on the Open VSX Registry and the Microsoft Extension Marketplace, underscoring how developers have become a prime target for attacks. The sophisticated threat, codenamed...

Over 100 VS Code Extensions Exposed Developers to Hidden Supply Chain Risks

New research has uncovered that publishers of over 100 Visual Studio Code VS Code extensions leaked access tokens that could be exploited by bad actors to update the extensions, posing a critical software supply chain risk. "A leaked VS Code Marketplace or Open VSX PAT personal access token allow...

EUVD-2025-19382

Malicious code in bioql PyPI...