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AI coding tools exploited in new Miasma Worm credential theft attacks

By PulseAugur Editorial · [1 sources] ·

A new supply chain attack, dubbed Miasma Worm, has emerged, leveraging configuration files within AI coding tools to steal credentials. Attackers exploit features like session start hooks in tools such as Claude Code and Gemini CLI, as well as agent instructions in Cursor and auto-tasks in VS Code. The attack, attributed to TeamPCP, has already compromised over 100 GitHub repositories by embedding a JavaScript credential harvester that executes automatically when a project is opened in these AI development environments. AI

IMPACT Highlights critical security risks in AI development tools, necessitating immediate patching and heightened vigilance against new supply chain attack vectors.

RANK_REASON The article details a security vulnerability and attack method targeting specific AI coding tools, rather than a new model release or core research.

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

AI coding tools exploited in new Miasma Worm credential theft attacks

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
The article details a security vulnerability and attack method targeting specific AI coding tools, rather than a new model release or core research.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, safety
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
107 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · Toni Antunovic ·

    Miasma Worm: How Opening a Repo in Claude Code Became a Credential Theft Vector

    <p><em>This article was originally published on <a href="https://lucidshark.com/blog/miasma-worm-ai-coding-tool-config-credential-theft-2026" rel="noopener noreferrer">LucidShark Blog</a>.</em></p> <p>On June 5, 2026, attackers pushed a single malicious commit to <code>Azure/dura…

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