GitHub imposes 48-hour expiry on npm trusted publishing to fix supply chain flaw
GitHub has implemented a 48-hour expiration window for unvalidated npm trusted publishing configurations. This change addresses a vulnerability discovered by Bloom Security on June 6, 2026, which exploited how repositories were identified. The flaw allowed attackers to claim abandoned repository names and publish unauthorized package updates. Over 1,500 vulnerable packages had been downloaded more than 10 million times.
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