Improper Handling of Syntactically Invalid Structure Affecting github.com/cometbft/cometbft/libs/bits package, versions <0.37.16>0.38.0-alpha.1 <0.38.19
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMCOMETBFTCOMETBFTLIBSBITS-13553935
- published15 Oct 2025
- disclosed14 Oct 2025
- creditwhoismxuse
Introduced: 14 Oct 2025
New CVE NOT AVAILABLE CWE-228 Â (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade github.com/cometbft/cometbft/libs/bits to version 0.37.16, 0.38.19 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Syntactically Invalid Structure via the handling of BitArray objects with mismatched Elems and Bits values. An attacker can cause network disruption or halt by sending specially crafted messages containing invalid BitArray states to peers, which may then propagate these messages throughout the network before processing them themselves.
Workaround
This vulnerability can be mitigated by banning the IP address of malicious peers using tools such as iptables.