RHSA-2022:4770 — Security Advisory
Red Hat Security Advisory: thunderbird security update
Severity
CriticalRed Hat Product Security
Products
Official CSAF product identity
Published · May 28, 2022
Updated · November 22, 2025
Topic
An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 91.9.1.
Security Fix(es):
-
Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution (CVE-2022-1529)
-
Mozilla: Prototype pollution in Top-Level Await implementation (CVE-2022-1802)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.