CVE-2026-32240 | BDVDB-2026-320244 Detail
capnprotocapnproto
Description#
Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, when using Transfer-Encoding: chunked, if a chunk's size parsed to a value of 2^64 or larger, it would be truncated to a 64-bit integer. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.
Impact#
Per CVSS v4.0: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
References#
- https://github.com/capnproto/capnproto/security/advisories/GHSA-vpcq-mx5v-32wm
- https://github.com/capnproto/capnproto/commit/2744b3c012b4aa3c31cefb61ec656829fa5c0e36
- https://github.com/capnproto/capnproto/commit/e929f0ba7901a6b8f4b5ba9a4db00af43288cbb0
- https://capnproto.org/capnproto-c++-1.4.0.tar.gz
- https://capnproto.org/capnproto-c++-win32-1.4.0.zip
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.