# CVE-2023-5726: thunderbird: A website could have obscured the full screen notification by using the file open dialog

CVE-2023-5726 is fixed in 6 products on 1 platform, first by thunderbird 1:115.4.1+build1-0ubuntu0.20.04.1, released October 25, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-5726
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0069
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 25, 2023

## Description

A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. *Note: This issue only affected macOS operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [thunderbird 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [thunderbird 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [thunderbird 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-thunderbird-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird-gnome-support Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [thunderbird-gnome-support 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-thunderbird-gnome-support-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | thunderbird-mozsymbols Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [thunderbird-mozsymbols 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-thunderbird-mozsymbols-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-calendar-timezones Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [xul-ext-calendar-timezones 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-xul-ext-calendar-timezones-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-gdata-provider Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [xul-ext-gdata-provider 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-xul-ext-gdata-provider-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |
| Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:115.4.1+build1-0ubuntu0.20.04.1 | [xul-ext-lightning 1:115.4.1+build1-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-115.4.1-build1-0ubuntu0.20.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:115.4.1+build1-0ubuntu0.22.04.1 | [xul-ext-lightning 1:115.4.1+build1-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-115.4.1-build1-0ubuntu0.22.04.1.md) | Oct 25, 2023 |
| Linux | xul-ext-lightning Ubuntu 24.04.5 LTS (noble) | 1:115.4.1+build1-0ubuntu1 | [xul-ext-lightning 1:115.4.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-xul-ext-lightning-1-115.4.1-build1-0ubuntu1.md) | Oct 25, 2023 |

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