ALT-PU-2026-1254-4 — firefox-esr

BDU:2025-16356

HIGH7.5

Уязвимость компонента Downloads Panel браузера Mozilla Firefox и почтового клиента Thunderbird, позволяющая нарушителю проводить спуфинг-атаки

Published: 2025-12-26Modified: 2026-04-03

CVSS 3.xHIGH 7.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS 2.0HIGH 7.8

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:C/A:N

References

BDU:2026-00525

HIGH8.1

Уязвимость браузеров Mozilla Firefox, Firefox ESR, почтовых клиентов Thunderbird и Thunderbird ESR, связанная с выходом операции за границы буфера в памяти, позволяющая нарушителю выполнить произвольный код

Published: 2026-01-19Modified: 2026-04-03

CVSS 3.xHIGH 8.1

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0HIGH 7.6

CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:C

References

BDU:2026-03388

MEDIUM5.3

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая оказать воздействие на конфиденциальность защищаемой информации

Published: 2026-03-19Modified: 2026-04-03

CVSS 3.xMEDIUM 5.3

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS 2.0MEDIUM 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N

References

BDU:2026-03389

HIGH8.8

Уязвимость компонента IPC браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Published: 2026-03-19Modified: 2026-04-03

CVSS 3.xHIGH 8.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

BDU:2026-03390

HIGH8.8

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая раскрыть защищаемую информацию

Published: 2026-03-19Modified: 2026-04-03

CVSS 3.xHIGH 8.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

BDU:2026-03391

CRITICAL9.8

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая раскрыть защищаемую информацию

Published: 2026-03-19Modified: 2026-04-03

CVSS 3.xCRITICAL 9.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

BDU:2026-03392

HIGH8.1

Уязвимость компонента DOM: Security браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю обойти существующие ограничения безопасности

Published: 2026-03-19Modified: 2026-04-03

CVSS 3.xHIGH 8.1

CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS 2.0CRITICAL 9.4

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:N

References

CVE-2025-14327

HIGH7.5

Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.

Published: 2025-12-09Modified: 2026-04-13

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

CVE-2026-0877

HIGH8.1

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xHIGH 8.1

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

CVE-2026-0878

HIGH8.0

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.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xHIGH 8.0

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

References

CVE-2026-0879

CRITICAL9.8

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2026-0880

HIGH8.8

Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2026-0882

HIGH8.8

Use-after-free in the IPC component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xHIGH 8.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

CVE-2026-0883

MEDIUM5.3

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xMEDIUM 5.3

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

CVE-2026-0884

CRITICAL9.8

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2026-0885

MEDIUM6.5

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

References

CVE-2026-0886

MEDIUM5.3

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xMEDIUM 5.3

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

CVE-2026-0887

MEDIUM4.3

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xMEDIUM 4.3

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

References

CVE-2026-0890

MEDIUM5.4

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xMEDIUM 5.4

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

References

CVE-2026-0891

HIGH8.1

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Published: 2026-01-13Modified: 2026-04-13

CVSS 3.xHIGH 8.1

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Package update firefox-esr in branch sisyphus

Closed issues (20)

Уязвимость компонента Downloads Panel браузера Mozilla Firefox и почтового клиента Thunderbird, позволяющая нарушителю проводить спуфинг-атаки

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая оказать воздействие на конфиденциальность защищаемой информации

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая раскрыть защищаемую информацию

Уязвимость компонента Graphics браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая раскрыть защищаемую информацию

Уязвимость компонента DOM: Security браузеров Mozilla Firefox, Firefox ESR и почтового клиента Thunderbird, позволяющая нарушителю обойти существующие ограничения безопасности

Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

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.

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Use-after-free in the IPC component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.