According to Foresight News, the Bitcoin Core project has revealed two previously undisclosed security vulnerabilities that could have impacted the stability of the Bitcoin network. The first vulnerability, classified as high severity, could have caused network crashes through spam attacks. The second, considered less severe, involved the Miniupnp library used by Bitcoin Core, potentially leading to node memory exhaustion. Both vulnerabilities were addressed in the Bitcoin Core v22.0 release in 2021 but were only recently made public.