CVE-2026-0878

None

Open

TLP:CLEAR

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component

NVD CVE.org

Critical Infrastructure

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Description

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Details

EPSS Score ⓘ: 0.43%

35.3th percentile
Confidence: 90%
Published: Jan 13, 2026
Last Modified: Jul 15, 2026

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