# Mozilla Thunderbird (ms) 147.0.1

Mozilla Thunderbird (ms) 147.0.1, released January 28, 2026, fixes 1 CVE in Mozilla Thunderbird (ms). None of them is reported as exploited. Patch Radar priority: Routine. The latest Mozilla Thunderbird (ms) is 159.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.ms-147.0.1
- Platform: Windows apps
- Released: Jan 28, 2026
- Priority: Routine (Closes CVE-2026-0818)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Superseded by: [Mozilla Thunderbird (ms) 159.0](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-ms.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Mozilla Thunderbird (ms)](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-ms.md) |  | 147.0.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-0818](https://patchblox.com/security/data/cve/CVE-2026-0818.md) | Routine | CSS-based exfiltration of the content from partially encrypted emails when allowing remote content | 4.3 | 0.0018 |  |

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Data as of 2026-11-10T20:03:11Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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