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A security researcher found a flaw in Anthropic's Claude Code GitHub Action that let an attacker take over vulnerable public repositories running it, with nothing more than a single opened GitHub issue. Because Anthropic's own action repo used the same workflow, a working attack could have pushed malicious code into the action itself and onto the projects downstream that pull it

More from The Hacker News 5 Jun 2026, 3:15 a.m. Theme · 2 stories Artificial Intelligence Flaw Github Malicious Code Vulnerability