HTTP method names must be tokens appearing in web log

SonarQube Server / Community Build
1

We are running an on prem version of sonarqube server
Community Edition Version 10.3 to be precise

We have started seeing occurrences of this error in the web.logs.
2024.06.13 13:12:14 INFO web[o.a.c.h.Http11Processor] Error parsing HTTP request header\n Note: further occurrences of HTTP request parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name [0x160x030x010x070x050x010x000x070x010x030x030xb00x02.30x1b0x1bF&0xe00xf20xb00xc9/0x9b0xf20xfce0xf00xe10xc0&0xe90xde0xd6n<0x820xe60xcd0xf2Z0xc2 ]. HTTP method names must be tokens
at org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:407)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:263)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:928)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1794)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

Does anyone have any thoughts as to why this is occurring

2

Hey there.

This can happen for a number of reasons, none of which are really worrying. You can see one example here: