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New 'Friendly Fire' exploit hijacks multiple AI coding agents

By PulseAugur Editorial · [1 sources] ·

A new exploit dubbed "Friendly Fire" demonstrates a critical vulnerability in AI coding agents like Claude Code and OpenAI's Codex. Researchers Boyan Milanov and Heidy Khlaaf from the AI Now Institute found that a single malicious payload could hijack Claude Sonnet 4.6, Claude Sonnet 5, Claude Opus 4.8, and Codex running GPT-5.5 without modification. The exploit works because these agents struggle to differentiate between code they are meant to analyze and malicious instructions, leading them to execute harmful code when tasked with inspecting external repositories. AI

IMPACT This exploit highlights a fundamental security flaw in AI coding agents, potentially leading to widespread compromise of code repositories and requiring new security paradigms beyond model updates.

RANK_REASON Security vulnerability discovered in AI coding tools.

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

New 'Friendly Fire' exploit hijacks multiple AI coding agents

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
Security vulnerability discovered in AI coding tools.
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
safety, product
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
48 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. Towards AI TIER_1 English(EN) · Chew Loong Nian - AI ENGINEER ·

    One Malicious Payload Hijacked Claude Code AND Codex Unchanged — The 'Friendly Fire' Exploit Has No…

    <div class="medium-feed-item"><p class="medium-feed-image"><a href="https://pub.towardsai.net/one-malicious-payload-hijacked-claude-code-and-codex-unchanged-the-friendly-fire-exploit-has-no-1c40cc3698cf?source=rss----98111c9905da---4"><img src="https://cdn-images-1.medium.com/max…

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