Claude Mythos Finds Only One Curl Vulnerability; Experts Divided on What It Really Means - SecurityWeek

Remember the 'wake-up call' we covered last week? Anthropic's Mythos was supposed to discover vulnerabilities at a level exceeding skilled human researchers – a terrifying harbinger of AI-driven cyberattacks. Well, the actual test of the restricted Claude Mythos model on the ubiquitous curl library turned up exactly one bug: a low-severity vulnerability that probably won't bring down the internet. It's almost as if the gap between a press release and a real-world evaluation is wider than the Atlantic.

Experts are now performing the customary dance of division: some argue the finding casts doubt on Anthropic's claims, while others insist curl is simply exceptionally secure – which, if true, is a damning commentary on every other piece of software in existence. The restricted model, complete with Anthropic's 'constitutional AI' guardrails, may simply be nerfed to the point of uselessness. Meanwhile, the company's earlier 'wake-up call' narrative looks increasingly like a marketing stunt designed to sell security services rather than a genuine technical breakthrough.

And what of the regulators who were supposed to be galvanised? Alejandro Mayorkas recently endorsed voluntary policies for advanced AI – the perfect response to a threat that, in practice, turns out to be a single low-severity curl bug. The real vulnerability isn't in curl; it's in the media's willingness to amplify Anthropic's latest announcement without waiting for the test results. With this track record, perhaps the only thing Mythos should be waking up is Anthropic's PR department.