FIND-20260406-009 · 2026-04-06 · Innovation Veille
actix-web 4.13.0 — HTTP/2 Flow Control, WebSocket Feature Flag, MSRV Rust 1.88
release
MEDIUM
actix-web 4.13.0 (released February 2026) is the current stable version already tracked in last-versions.json. Key changes: HTTP/2 upload throughput improved via larger default flow control windows, new 'ws' crate feature flag for WebSocket support, half-closed HTTP/1 connection handling configuration, new ServiceConfigBuilder type, and MSRV raised to Rust 1.88. ODS is confirmed at 4.13.0. No immediate action — confirming no newer version has shipped.
Source
https://github.com/actix/actix-web/releases/tag/web-v4.13.0
ODS Impact
ODS Rust services (oid, billing-engine, docstore, pdf-engine, notification-hub) use actix-web 4.13.0. The HTTP/2 flow control improvement benefits high-throughput PDF upload and document processing endpoints. MSRV 1.88 is well below the current ODS Rust 1.94.1 toolchain. No upgrade required — current version confirmed stable.
Security Review
License: MIT / Apache-2.0 | Maintenance: ACTIVE | Risk: LOW | Recommendation: SAFE_TO_USE
Tags
rust
actix-web
release
http2
websocket
performance