# Shardeum Ancillaries III
## Reports by Severity
Critical
* \#39626 \[W\&A-Critical] Malicious Validator Can Overwrite Any Cycle Data
* \#39872 \[W\&A-Critical] Bypass Receipt Signing Validation
* \#39893 \[W\&A-Critical] Malicious Validator Can Modify \`txId\` in Global Transactions
* \#39434 \[W\&A-Critical] Improper serialization can create an out-of-memory (OOM) issue on the archive server.
* \#39980 \[W\&A-Critical] Malicious validator can inject its own cycle record into connected archiver
* \#40004 \[W\&A-Critical] Multiple vulnerabilities in signature verification during receipt processing on the archiver server
* \#39829 \[W\&A-Critical] DOS archiver via data subscription channel due to broken safeStringfy
Medium
* \#39820 \[W\&A-Medium] Blocking all users from interacting with particular contracts/protocols via JSON-RPC server
* \#39284 \[W\&A-Medium] Arbitrarily set any archiver config and remotely turning it off
* \#39910 \[W\&A-Medium] Numerous replay attacks (with arbitrary data) to protected endpoints are possible
* \#39942 \[W\&A-Medium] Archiver is still vulnerable to replay attack to \`/set-config\`
Low
* \#39993 \[W\&A-Low] node-fetch without response limit
* \#39623 \[W\&A-Low] Blocking the victim's account address from sending transactions via JSON-RPC
* \#39814 \[W\&A-Low] Prevent new validators from joining the network by a DOS of the archiver
Insight
* \#39109 \[W\&A-Insight] syncStateDataGlobals will not work, effectively DoS'ing nodes
* \#39944 \[W\&A-Insight] Incorrect Default Configuration Leading to Dead Code
* \#39360 \[W\&A-Insight] getRandomActiveNodes may return inconsistent results
## Reports by Type
Websites & Applications
* \#39993 \[W\&A-Low] node-fetch without response limit
* \#39820 \[W\&A-Medium] Blocking all users from interacting with particular contracts/protocols via JSON-RPC server
* \#39626 \[W\&A-Critical] Malicious Validator Can Overwrite Any Cycle Data
* \#39623 \[W\&A-Low] Blocking the victim's account address from sending transactions via JSON-RPC
* \#39109 \[W\&A-Insight] syncStateDataGlobals will not work, effectively DoS'ing nodes
* \#39284 \[W\&A-Medium] Arbitrarily set any archiver config and remotely turning it off
* \#39814 \[W\&A-Low] Prevent new validators from joining the network by a DOS of the archiver
* \#39872 \[W\&A-Critical] Bypass Receipt Signing Validation
* \#39893 \[W\&A-Critical] Malicious Validator Can Modify \`txId\` in Global Transactions
* \#39910 \[W\&A-Medium] Numerous replay attacks (with arbitrary data) to protected endpoints are possible
* \#39944 \[W\&A-Insight] Incorrect Default Configuration Leading to Dead Code
* \#39434 \[W\&A-Critical] Improper serialization can create an out-of-memory (OOM) issue on the archive server.
* \#39980 \[W\&A-Critical] Malicious validator can inject its own cycle record into connected archiver
* \#39942 \[W\&A-Medium] Archiver is still vulnerable to replay attack to \`/set-config\`
* \#40004 \[W\&A-Critical] Multiple vulnerabilities in signature verification during receipt processing on the archiver server
* \#39829 \[W\&A-Critical] DOS archiver via data subscription channel due to broken safeStringfy
* \#39360 \[W\&A-Insight] getRandomActiveNodes may return inconsistent results
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