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Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade firefox | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debugsourceUpgrade firefoxUpgrade firefox-debuginfo | Oct 13, 2026 | Sep 15, 2026 |
| Mfsa2026 90 | — | Upgrade to Mozilla Firefox version 156.0Upgrade to the latest version of Mozilla Firefox | Sep 15, 2026 | Sep 15, 2026 |
| Mfsa2026 93 | — | Upgrade to Mozilla Firefox ESR version 153.3Upgrade to the latest version of Mozilla Firefox | Sep 15, 2026 | Sep 15, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 153.3Upgrade to the latest version of Mozilla Thunderbird | Sep 15, 2026 | Sep 15, 2026 |
| Redhat_linux | — | — | Sep 18, 2026 | Sep 15, 2026 |
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