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MEDIUM

WebChannel APIs susceptible to confused deputy attack

Published Jan 7, 2025

Description

The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Affected products

Remediation

Red Hat statement

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

References (11)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Jan 7, 2025
Updated Apr 13, 2026
Reserved Jan 6, 2025
CISA Vulnrichment
Updated Jan 8, 2025
NVD
Status Modified
Modified Oct 5, 2026
Red Hat
Severity Moderate
Public date Jan 7, 2025
ENISA EUVD
Assigner mozilla
Published Jan 7, 2025
Updated Apr 13, 2026
Exploited since n/a
EUVD-2025-1569