HTTP Request Smuggling Affecting virt-firmware-rs package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.22% (14th percentile)

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  • Snyk IDSNYK-RHEL10-VIRTFIRMWARERS-22183552
  • published4 Nov 2026
  • disclosed3 Nov 2026

Introduced: 3 Nov 2026

NewCVE-2026-121441  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 virt-firmware-rs.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt-firmware-rs package and not the virt-firmware-rs package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Wasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 contains a request smuggling vulnerability in wasi-http that allows guests to set multiple conflicting content-length headers. Malicious guests can make the host send HTTP requests with conflicting content-length values to smuggle requests through servers or intermediaries that do not reject them.

CVSS Base Scores

version 3.1