Summary
Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
* libexpat: denial of service via crafted XML input (CVE-2026-45186)
Bug Fix(es) and Enhancement(s):
* Thunderbird ESR 153 rebase [rhel-10.2.z] (JIRA:RHEL-175207)
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 10 | thunderbird | 153.5.0-1.el10_2.alma.1 |
Vulnerabilities 1
-
Low 2.9
In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service vi…