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**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 154 Firefox ESR versions prior to 115.39 Firefox ESR versions prior to 140.14 Firefox ESR versions prior to 153.1 Thunderbird versions prior to 154 Thunderbird versions prior to 140.14 Thunderbird versions prior to 153.1 **Description** A site isolation issue exists within the Graphics: CanvasWebGL component. Site isolation is a security mechanism that ensures web pages from different sites are processed in separate processes to prevent one site from accessing data from another. **Recommendations** Update Firefox to version 154 or later. Update Firefox ESR to version 115.39 or later. Update Firefox ESR to version 140.14 or later. Update Firefox ESR to version 153.1 or later. Update Thunderbird to version 154 or later. Update Thunderbird to version 140.14 or later. Update Thunderbird to version 153.1 or later.

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 153 Firefox ESR versions prior to 115.38 Firefox ESR versions prior to 140.13 Thunderbird versions prior to 153 Thunderbird version prior to 140.13 **Description** An information disclosure issue exists within the Graphics: ImageLib component. **Recommendations** Update Firefox to version 153 or later. Update Firefox ESR to version 115.38 or later. Update Firefox ESR to version 140.13 or later. Update Thunderbird to version 153 or later. Update Thunderbird to version 140.13 or later.

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 152 Firefox ESR versions prior to 140.12 Thunderbird versions prior to 152 Thunderbird versions prior to 140.12 **Description** A memory safety bug exists that could lead to unexpected behavior or crashes. **Recommendations** Update Firefox to version 152. Update Firefox ESR to version 140.12. Update Thunderbird to version 152. Update Thunderbird to version 140.12.

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 151 Thunderbird versions prior to 151 **Description** A same-origin policy bypass exists in the DOM: Networking component. The same-origin policy is a critical security mechanism that restricts how a document or script loaded from one origin can interact with a resource from another origin. **Recommendations** Update to version 151.