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agronholm CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

CRITICAL agronholm CVE published 2026-09-22

CVE-2026-63374

CVE-2026-63374 is a critical vulnerability in the AnyIO framework that can lead to certificate validation issues when connecting to non-ASCII domains. The issue arises from the framework's use of IDNA 2003 instead of IDNA 2008 for internationalized host name validation. This can allow an attacker to hijack or redirect connections and present a legitimate certificate for a different ASCII hostname, potenti [truncated]