Executive Summary
Squidbleed, a decades-old Heartbleed-style Squid proxy flaw that can expose user data, was discovered with the help of Claude Mythos Preview.
What Happened
Squidbleed, discovered with the aid of Claude Mythos Preview, has been described as a Heartbleed-style vulnerability. The post Decades-Old Squid Proxy Flaw ‘Squidbleed’ Can Expose User Data appeared first on SecurityWeek .
Affected Products
- Squid proxy
Vulnerability / Attack Technique
Memory disclosure, found with AI assistance
Technical Mechanism
The summary notes an AI model helped find the long-standing bug.
AI Security Category
AI-assisted attack
Part of the AI-Assisted Attacks topic.
RealGround Analysis
AI is surfacing old bugs in core infrastructure. RealGround analysis: expect more such disclosures and keep infrastructure patched.
Recommended Controls
- Update Squid
Related RealGround Service
AI Agent SBOM and LLM Mapping · or start with the free AI Agent Security Scanner.
Sources
securityweek.com: https://www.securityweek.com/decades-old-squid-proxy-flaw-squidbleed-can-expose-user-data/
Summary and analysis written by RealGround from the source above; last updated 2026-10-18.