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Update capnproto with HTTP CVE fixes.#6308

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kentonv merged 1 commit intomainfrom
kenton/update-capnp
Mar 12, 2026
Merged

Update capnproto with HTTP CVE fixes.#6308
kentonv merged 1 commit intomainfrom
kenton/update-capnp

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@kentonv kentonv commented Mar 12, 2026

CVE-2026-32239 and CVE-2026-32240.

These could affect workerd if workerd is placed behind (or in front of) a proxy that exhibits certain bugs of its own, leading to request/response smuggling. We are not aware of any proxy which exhibits the necessary behavior. This does not affect Cloudflare's production environment.

More details in: https://github.com/capnproto/capnproto/blob/v2/security-advisories/2026-03-12-1-http-size-validation.md

CVE-2026-32239 and CVE-2026-32240.

These could affect workerd if workerd is placed behind (or in front of) a proxy that exhibits certain bugs of its own, leading to request/response smuggling. We are not aware of any proxy which exhibits the necessary behavior. This does not affect Cloudflare's production environment.

More details in: https://github.com/capnproto/capnproto/blob/v2/security-advisories/2026-03-12-1-http-size-validation.md
@kentonv kentonv requested a review from danlapid March 12, 2026 15:00
@kentonv kentonv requested review from a team as code owners March 12, 2026 15:00
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ask-bonk bot commented Mar 12, 2026

The deps.jsonc specifies capnp-cpp tracks the v2 branch with no frozen commit — so the generated file in build/deps/gen/deps.MODULE.bazel is the only thing that needs updating. The change is self-consistent.

LGTM

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@kentonv kentonv merged commit d13f049 into main Mar 12, 2026
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@kentonv kentonv deleted the kenton/update-capnp branch March 12, 2026 16:57
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2 participants