libprotocol-http2-perl: Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb
CVE-2026-10725 is fixed in 2 products on 1 platform, first by SUSE-SU-2026:22188-1, released June 20, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libprotocol-http2-perl · Debian 14 | 1.12-2 | DEBIAN-CVE-2026-10725 | Jun 24, 2026 |
| perl-Protocol-HTTP2 · opensuse-leap 16.0 | 1.10-160000.3.1 | OPENSUSE-SU-2026:21125-1 | Jun 20, 2026 |
| perl-Protocol-HTTP2 · sles 16.0 | 1.10-160000.3.1 | SUSE-SU-2026:22188-1 | Jun 20, 2026 |
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