CVE-2026-32239

Cap'n Proto has an integer overflow in KJ-HTTP

CVSS 6.3 MEDIUMEPSS 0.2%CWE-190 CWE-444

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Produtos afetados

capnproto · capnproto

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Referências

https://capnproto.org/capnproto-c++-1.4.0.tar.gz https://capnproto.org/capnproto-c++-win32-1.4.0.zip https://github.com/capnproto/capnproto/commit/2744b3c012b4aa3c31cefb61ec656829fa5c0e36 https://github.com/capnproto/capnproto/commit/e929f0ba7901a6b8f4b5ba9a4db00af43288cbb0 https://github.com/capnproto/capnproto/security/advisories/GHSA-qjx3-pp3m-9jpm