{"id":"thehackernews-c6fd9c70afae","seq":1576468,"kind":"news","title":"OpenAI Compaction Flaw Let Researchers Bypass Hidden Reasoning Protections","url":"https://thehackernews.com/2026/10/openai-compaction-flaw-let-researchers.html","permalink":"https://vulnpulse.app/items/thehackernews-c6fd9c70afae","summary":"OpenAI's compaction feature, which shrinks a long conversation to save space, could be turned into a way to copy a model's hidden reasoning out in plain text, security firm Xint has shown. OpenAI's reasoning models work through a problem before answering, and the service normally returns only the raw reasoning as an encrypted item the user cannot read. The method got past","severity":null,"techs":["openai"],"cves":[],"tags":["security"],"source":{"id":"thehackernews","name":"The Hacker News"},"published_at":"2026-10-27T08:22:43.000Z","fetched_at":"2026-10-27T09:53:50.864Z"}