RUSTSEC-2026-0446

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0446

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0446.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2026-0446

Aliases

GHSA-2q7f-mf9f-5qhr

Published

2026-11-06T12:00:00Z

Modified

2026-11-06T14:45:02Z

Summary

Request smuggling through malformed chunked request trailers

Details

The HTTP/1 chunked decoder accepts a bare line feed after the final chunk as the start of a trailer instead of rejecting the malformed request.

When an upstream proxy reuses a connection and either pipelines the requests or does not take steps to validate the chunked stream, the decoder can consume the next request's headers as trailer data. It can then parse that request's body as a new request. An attacker can use this difference in request parsing to bypass access controls enforced by a proxy or web application firewall.

Upgrade to actix-http 3.20.2 or later.

Database specific

{
    "license": "CC0-1.0"
}

References

Affected packages

crates.io / actix-http

Package

Name: actix-http; View open source insights on deps.dev
Purl: pkg:cargo/actix-http

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Fixed

3.20.2

Ecosystem specific

{
    "affected_functions": null,
    "affects": {
        "arch": [],
        "functions": [],
        "os": []
    }
}