{"id":"PYSEC-2026-1069","aliases":["MAL-2026-5317"],"title":"Malicious code in instructor-mcp (PyPI)","summary":"Malicious code in instructor-mcp (PyPI)","severity":"none","vendor":"instructor-mcp","product":"instructor-mcp","ecosystem":"pip","affected":["instructor-mcp"],"published":"2026-07-07","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/PYSEC-2026-1069","references":[{"url":"https://inspector.pypi.io/project/instructor-mcp/1.15.3/packages/0e/e2/1f6d4c8dba9e185be98499dceeecc90fd1e5f94dcbb020dee1d883391461/instructor_mcp-1.15.3-py3-none-any.whl/instructor_mcp-setup.pth"},{"url":"https://www.endorlabs.com/learn/shai-hulud-hades-wave-hits-six-pypi-bioinformatics-packages"},{"url":"https://www.stepsecurity.io/blog/the-hades-campaign-pypi-packages"}],"tags":["osv","pip"],"ingestedAt":"2026-07-08T18:34:39.982Z","slug":"PYSEC-2026-1069","body":"## Overview\n\nPart of the \"Hades\" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,\nmalicious phantom releases of instructor-mcp were published to PyPI using stolen\ncredentials. The package executes a bundled JavaScript payload (via the Bun\nruntime) on import that harvests and exfiltrates credentials and attempts\nself-propagation. This entry is a summary; behavior may not be fully\ncharacterized here. See the linked references for detailed analysis and\nindicators of compromise.\n\n\n## Affected packages\n\n- `instructor-mcp`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}