This is a new patch version release that includes, new features and important security updates.

Artwork based on Coins on Baby Blue Surface by DS Stories (CC License)

         Litecoin Core version 0.21.4 is now available.

Please report bugs using the issue tracker at GitHub: https://github.com/litecoin-project/litecoin/issues

Important Security Updates

This release contains fixes for the following security vulnerabilities:

• CVE-2024-35202: which allows remote attackers to cause a denial of service (blocktxn message-handling assertion and node exit)
  by including transactions in a blocktxn message that are not committed to in a block’s merkle root.
  FillBlock can be called twice for one PartiallyDownloadedBlock instance.
• 5d4a2e5: backported from Bitcoin Core (a8897f6)
• Hindered block propagation due to mutated blocks: where a peer could send mutated blocks which could clear the download state of other peers that also announced block, hindering block propagation.
• dab3bb7: backported from Bitcoin Core (dbfc748)
• Infinite loop bug in miniupnp dependency: which could be exploited by an attacker on the local network to trigger an OOM.
• 16ba8b8: backported from Bitcoin Core (fa2a5b8)

Bug fixes

• 0d04e75: default -peerblockfilters and -blockfilterindex to off when pruning is enabled

Test related fixes

• 7d9fea0: fix functional tests that were broken by changes in 0.21.3

Credits

Thanks to everyone who directly contributed to this release: