CVE-2022-31736

Mozilla: Cross-Origin resource's length leaked

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Severity

Important

Red Hat Product Security

9.8

CVSS 3.1

Review impact separately from score.

Published · May 31, 2022

Updated · November 21, 2025

Description

The Mozilla Foundation Security Advisory describes this flaw as:

A malicious website that could have learned the size of a cross-origin resource that supported Range requests.

Statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-829 · Inclusion of Functionality from Untrusted Control Sphere