UK AI Safety Institute Finds Jailbreaks That Let GPT-5.6 Hack Autonomously
The UK's AI Security Institute says it broke GPT-5.6 Sol's guardrails in hours, unlocking autonomous exploit development rather than just vulnerability spotting, a broader risk than the flaw that got Anthropic's Fable 5 hit with export controls in June. No similar action has been taken against OpenAI's model.
The UK AI Security Institute (AISI) says its researchers found universal jailbreaks in GPT-5.6 Sol that go beyond spotting software flaws: once the guardrails are bypassed, the model can carry out long-form agentic tasks including autonomous exploit development, effectively hacking into systems on its own.
- Jailbreaks were developed within hours, though AISI researchers had privileged access that sped up discovery
- The flaw is broader than the one Amazon researchers found in Anthropic's Fable 5 days after its June 9 release, which only unlocked vulnerability identification, not exploitation
- That Fable 5 flaw led the US government to impose export controls on Fable 5 and Mythos 5 on June 12, lifted July 1
- No similar action has been taken against GPT-5.6 despite AISI's findings, which AI policy researchers are calling a double standard
The jailbreaks were often developed within hours - AISI, via Fortune
OpenAI pointed to its GPT-5.6 launch blog, which acknowledges 'there is no such thing as perfect security' and that new jailbreaks will keep surfacing. AISI said it does not comment on individual companies' release decisions.