-----------------ORIGIN PACKET---------------
GET /expr/injection?b=%7B%22a%22%3A1%7D HTTP/1.1
Host: vulinbox.bachang.org
X-Real-Ip: 18.218.124.105
X-Forwarded-For: 18.218.124.105
Remote-Host: 18.218.124.105
X-Forwarded-Proto: https
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Accept-Encoding: gzip, br, zstd, deflate

-----------------Handled---------------
a[]: last Stack Value is nil/undefined

b[{"a":1}]: last Stack Value is nil/undefined

c[]: last Stack Value is nil/undefined