Summary
Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
* firefox: thunderbird: URL Bar Spoofing via non-BMP Unicode characters (CVE-2025-3029)
* firefox: thunderbird: Use-after-free triggered by XSLTProcessor (CVE-2025-3028)
* firefox: thunderbird: Memory safety bugs fixed in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9 (CVE-2025-3030)
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 |
|---|---|---|
| Rocky Linux · 8 | thunderbird | 0:128.9.0-2.el8_10 |
Vulnerabilities 3
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High 8.1
Memory safety bugs fixed in Firefox 137, Thunderbird 137, Firefox ESR 128.9, and Thunderbird 128.9
Memory safety bugs present in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.…
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High 7.3
URL Bar Spoofing via non-BMP Unicode characters
A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.
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Medium 6.5
Use-after-free triggered by XSLTProcessor
JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. This vulnerability was fixed in Firefox 137, Firefox ESR 115.22, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.