CVE-2026-10725 Affecting libprotocol-http2-perl package, versions <1.12-2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.07% (22nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBPROTOCOLHTTP2PERL-17218743
  • published7 Jun 2026
  • disclosed6 Jun 2026

Introduced: 6 Jun 2026

NewCVE-2026-10725  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libprotocol-http2-perl to version 1.12-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libprotocol-http2-perl package and not the libprotocol-http2-perl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1