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CVE-2026-16028 is a memory exhaustion vulnerability in Protocol::HTTP2 for Perl versions before 1.14. The issue arises because closed streams are not fully removed from the connection stream table, causing memory to accumulate indefinitely during a connection's lifetime. This can lead to significant memory growth on the server when many streams are opened and closed sequentially. Join the discussion | CVE Database V5 | 09/09/2026, 00:00:00 UTC Added: 09/07/2026, 18:53:06 UTC |
0 Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory (the "HTTP/2 bomb"). The headers_decode method materialises a full key+value copy per indexed reference with no running size check, and the stream_header_block_add method appends (since version 1.12) every CONTINUATION frame to the per-stream buffer unbounded. MAX_HEADER_LIST_SIZE (default 65536) is advertised in SETTINGS but never consulted on decode. It is absent from the decoder and from the :limits export tag. Join the discussion | CVE Database V5 | 06/06/2026, 09:14:45 UTC Added: 06/06/2026, 10:03:48 UTC |
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