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


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-RHEL10-VIRTFIRMWARERS-22183546
  • published4 Nov 2026
  • disclosed3 Nov 2026

Introduced: 3 Nov 2026

NewCVE-2026-121439  (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 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 contains a response splitting vulnerability in wasi-http p3 that allows guests to set unvalidated content-length headers. Malicious wasip3 guests can splice an existing body into a new response with an incorrect content-length to perform response splitting or injection attacks.

CVSS Base Scores

version 3.1