High severity7.5NVD Advisory· Published Jun 6, 2026· Updated Jun 10, 2026
CVE-2026-10725
CVE-2026-10725
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- Range: <1.13
- Range: <1.13
- osv-coords3 versionspkg:rpm/opensuse/perl-Protocol-HTTP2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/perl-Protocol-HTTP2&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/perl-Protocol-HTTP2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 1.130.0-1.1+ 2 more
- (no CPE)range: < 1.130.0-1.1
- (no CPE)range: < 1.10-160000.3.1
- (no CPE)range: < 1.10-160000.3.1
Patches
Vulnerability mechanics
References
6- github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patchnvdPatch
- security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patchnvdPatch
- www.openwall.com/lists/oss-security/2026/06/06/7nvdMailing ListThird Party Advisory
- metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pmnvdProduct
- metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pmnvdProduct
- metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changesnvdRelease Notes
News mentions
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