Claude Code GitHub Action Flaw Enabled Repo Hijack

🔴 Critical | Source: The Hacker News A flaw in Anthropic’s Claude Code GitHub Action allowed an attacker to hijack public repositories simply by opening a malicious GitHub issue, requiring no authentication or special access. Because Anthropic’s own repository used the same vulnerable workflow, a successful attack could have injected malicious code into the action itself, poisoning every downstream project that consumes it. Researcher RyotaK of GMO discovered and reported the issue. ...

4 June 2026 Â· ZX Cloud Security

CVE-2026-41140: Poetry Path Traversal in Python

🟠 High | Source: Microsoft Security Response Center CVE-2026-41140 is a path traversal vulnerability in Poetry, a Python dependency management tool, affecting Python versions 3.10.0–3.10.12 and 3.11.0–3.11.4. The flaw occurs during tar archive extraction, potentially allowing a malicious package to write files outside the intended directory. This could lead to arbitrary file overwrite or code execution on systems that process untrusted Python packages. Architect’s Take: Audit any Azure-hosted pipelines or build environments using Poetry with the affected Python versions and upgrade to patched releases immediately. Pay particular attention to CI/CD systems that install dependencies from external or untrusted sources, as these represent the highest-risk attack surface. ...

4 June 2026 Â· ZX Cloud Security