PatchSiren cyber security CVE debrief

CVE-2026-45758 guardrails-ai CVE debrief

CVE-2026-45758 is a critical vulnerability in Guardrails AI, a Python framework for building AI applications. On May 11, 2026, at approximately 6:00 PM Pacific, an attacker published a malicious version of `guardrails-ai` (0.10.1) to PyPI. Any user who installed `guardrails-ai==0.10.1` from PyPI on May 11, 2026, may be affected. Security researchers identified the malicious package within approximately 2 hours of publication, and PyPI quarantined the repository. Based on telemetry, Guardrails AI maintainers observed no requests to Guardrails AI infrastructure originating from the malicious 0.10.1 version, and a review of system and access logs produced no evidence of user data exfiltration through their systems. Users should upgrade to version 0.10.2 or downgrade to version 0.10.0, both of which are unaffected. Those who installed version 0.10.1 should rotate any credentials accessible from their machine (GitHub PATs, cloud provider keys, package registry tokens, API keys) and audit their GitHub account for unauthorized workflows or repositories.