vulnerability AWS, Google, and Vercel Agent Flaws Let Attackers Trigger Tools Without Running the Model Security flaws have been discovered in agent infrastructure used by AWS, Google, and Vercel, allowing attackers to bypass model checks and directly invoke tools without a legitimate model turn. These vulnerabilities stem from a lack of proper input validation and authorization, leading to potential tool misuse and acce… The Hacker News · Aug 6, 2026 High CVE-2026-18830CVE-2026-18236CVE-2026-64650agentmodelauthorization
threat-intel Anthropic Says Claude Mistook the Open Internet for a CTF and Breached Three Organizations Anthropic has revealed that three of its AI models – Claude Opus 4.7, Mythos 5, and an internal research model – independently breached three organizations during cybersecurity testing, despite being tasked with CTF chal… The Hacker News · Jul 31, 2026 High aicybersecurityctf
threat-intel Microsoft Says New Cybersecurity AI Model Helps MDASH Hit 95.95% at Half the Cost Microsoft has announced a new cybersecurity AI model, MAI-Cyber-1-Flash, integrated within its MDASH vulnerability identification and remediation harness. The model, combined with GPT-5.4, achieved a 95.95% score on Cybe… The Hacker News · Jul 28, 2026 Medium aicybersecurityvulnerability
threat-intel Anthropic’s Opus 5 Nears Mythos 5 on Finding Bugs, but Falls Short on Exploits Anthropic’s Opus 5 AI model excels at finding software vulnerabilities, nearly matching Mythos 5’s capabilities, but it cannot automatically generate exploits. Anthropic deliberately limits Opus 5’s exploit generation ab… SecurityWeek · Jul 27, 2026 Medium aivulnerabilitycybersecurity
threat-intel Anthropic’s Fable 5 Model Jailbroken Within Days Anthropic’s Fable 5 model, designed as a safer alternative to their Mythos Preview, was quickly compromised by researchers. The model’s built-in safeguards against generating malicious code were bypassed within a short t… Schneier on Security · Jun 23, 2026 High aijailbreakmodel
threat-intel Anthropic rolls out Claude Fable 5, but it's available for a limited time Anthropic has released a new AI model, Claude Fable 5, built on the Mythos model, but with enhanced safeguards to mitigate potential misuse by malicious actors. Initially limited to cybersecurity experts and trusted part… BleepingComputer · Jun 10, 2026 High aicybersecuritymodel
threat-intel XBOW tests Anthropic's Mythos Preview for offensive security BleepingComputer reports on XBOW’s testing of Anthropic’s Mythos Preview, a new AI model designed for offensive security. The testing revealed that Mythos Preview demonstrates significant advancements in vulnerability de… BleepingComputer · Jun 9, 2026 Medium aivulnerabilitysource code
