CRITICALAdvisoryAug 22, 2026
Action required
Immediately identify all internal builds that consumed arrayref, internment, or append-only-vec in the affected timeframe. Isolate those developer workstations and CI/CD agents, scan for proc-macro1 artifacts and browser data exfiltration indicators, then reimage systems before returning to service.
Affected products
arrayrefinternmentappend-only-vecproc-macro1proc-macro2