WebChannel APIs susceptible to confused deputy attack. (CVE-2025-0237) Use-after-free when breaking lines in text. (CVE-2025-0238) Alt-Svc ALPN validation failure when redirected. (CVE-2025-0239) Compartment mismatch when parsing JavaScript JSON module. (CVE-2025-0240) Memory corruption when using JavaScript Text Segmentation. (CVE-2025-0241) Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. (CVE-2025-0242) Memory safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. (CVE-2025-0243)