Prompt-Injection

Prompt Injection Is Coming for Your Coding Agent

In early 2026, a critical vulnerability in Anthropic’s Claude Code made the rounds: CVE-2026-24887, which let an attacker bypass the user-approval prompt and execute arbitrary commands via prompt injection. Around the same time, researchers demonstrated prompt-injection-to-RCE chains in GitHub Actions—an external PR could trigger Claude Code in a workflow and, with a malicious payload in the PR title, achieve code execution with workflow privileges. Real incidents have shown agents exfiltrating SSH keys and credentials from hidden instructions in docs or comments. NIST has called prompt injection “generative AI’s greatest security flaw,” and it’s #1 on the OWASP LLM Top 10. If your team is rolling out AI coding assistants or agentic workflows, this isn’t theoretical. It’s the threat model you need to plan for.