CVE-2025-8029

Description

Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

PUBLISHED Reserved 2025-07-22 | Published 2025-07-22 | Updated 2026-04-13 | Assigner mozilla

Product status

Credits

Mirko Brodesser

References

lists.debian.org/debian-lts-announce/2025/07/msg00016.html

bugzilla.mozilla.org/show_bug.cgi?id=1928021

www.mozilla.org/security/advisories/mfsa2025-56/

www.mozilla.org/security/advisories/mfsa2025-58/

www.mozilla.org/security/advisories/mfsa2025-59/

www.mozilla.org/security/advisories/mfsa2025-61/

www.mozilla.org/security/advisories/mfsa2025-62/

www.mozilla.org/security/advisories/mfsa2025-63/

cve.org (CVE-2025-8029)

nvd.nist.gov (CVE-2025-8029)

Download JSON