CVE-2026-10725

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-10725
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch Patch
https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133 Product
https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414 Product
https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes Release Notes
https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch Patch
http://www.openwall.com/lists/oss-security/2026/06/06/7 Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:crux:protocol\:\:http2:*:*:*:*:*:perl:*:*
History

23 Jul 2026, 07:10

Type Values Removed Values Added
Summary
  • (es) Las versiones de Protocol::HTTP2 anteriores a la 1.13 para Perl son vulnerables a una bomba HTTP/2. La ruta HPACK de entrada de Protocol::HTTP2 no tiene límite de tamaño para la lista de encabezados, por lo que una pequeña solicitud HTTP/2 puede expandirse en una gran cantidad de memoria del servidor (la 'bomba HTTP/2'). El método headers_decode materializa una copia completa de clave+valor por referencia indexada sin una verificación de tamaño en ejecución, y el método stream_header_block_add añade (desde la versión 1.12) cada trama CONTINUATION al búfer por flujo sin límites. MAX_HEADER_LIST_SIZE (valor predeterminado 65536) se anuncia en SETTINGS pero nunca se consulta durante la decodificación. Está ausente del decodificador y de la etiqueta de exportación :limits.

10 Jun 2026, 14:56

Type Values Removed Values Added
First Time Crux protocol\
Crux
References () https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch - () https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch - Patch
References () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133 - () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133 - Product
References () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414 - () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414 - Product
References () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes - () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes - Release Notes
References () https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch - () https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch - Patch
References () http://www.openwall.com/lists/oss-security/2026/06/06/7 - () http://www.openwall.com/lists/oss-security/2026/06/06/7 - Mailing List, Third Party Advisory
CPE cpe:2.3:a:crux:protocol\:\:http2:*:*:*:*:*:perl:*:*

09 Jun 2026, 08:16

Type Values Removed Values Added
References
  • {'url': 'https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r1.patch', 'source': '9b29abf9-4ab0-4765-b253-1875cd9b441e'}
  • () https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch -
  • () https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes -
  • () https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch -
Summary (en) Protocol::HTTP2 versions through 1.12 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. (en) 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.

08 Jun 2026, 19:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

06 Jun 2026, 12:16

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/06/06/7 -

06 Jun 2026, 10:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-06-06 10:16

Updated : 2026-07-23 07:10

NVD link : CVE-2026-10725

Mitre link : CVE-2026-10725

CVE.ORG link : CVE-2026-10725

JSON object : View

Products Affected

crux

  • protocol\
CWE
CWE-409

Improper Handling of Highly Compressed Data (Data Amplification)