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litecoin/doc/release-notes-litecoin.md

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Litecoin Core version 0.21.4 is now available from:
<https://download.litecoin.org/litecoin-0.21.4/>.
This is a new patch version release that includes, new features and important security updates.
Please report bugs using the issue tracker at GitHub:
<https://github.com/litecoin-project/litecoin/issues>
Notable changes
===============
Important Security Updates
--------------------------
This release contains fixes for the following security vulnerabilities:
- [CVE-2024-35202](https://www.cvedetails.com/cve/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](https://bitcoincore.org/en/2024/10/08/disclose-mutated-blocks-hindering-propagation/),
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](https://bitcoincore.org/en/2024/07/31/disclose-upnp-oom/),
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:
- [The Bitcoin Core Developers](https://github.com/bitcoin/bitcoin/)
- [David Burkett](https://github.com/DavidBurkett/)
- [Hector Chu](https://github.com/hectorchu)
- [Loshan](https://github.com/losh11)