| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | ≥ 128.0, < 128.10< 115.23< 138.0 | 128.10115.23138.0 |
| thunderbird | < 128.10.0< 138.0 | 128.10.0138.0 |
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.
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