The Bitcoin Core project has disclosed two security vulnerabilities that could affect the stability of the Bitcoin network. The first vulnerability, which is categorized as high severity, could cause the network to crash through a spamming attack. The second vulnerability, which is listed at a lower severity level, is related to Miniupnp, a general-purpose plug-and-play library used by Bitcoin Core, and could lead to nodes running out of memory. Both vulnerabilities were fixed in Bitcoin Core v22.0, released in 2021, but were not disclosed to the public until recently.