CVE-2025-3029 — A crafted URL containing specific Unicode characters could have hidden the true origin of the page,…

Description

A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1952213
• https://www.mozilla.org/security/advisories/mfsa2025-20/
• https://www.mozilla.org/security/advisories/mfsa2025-22/
• https://www.mozilla.org/security/advisories/mfsa2025-23/
• https://www.mozilla.org/security/advisories/mfsa2025-24/
• https://lists.debian.org/debian-lts-announce/2025/04/msg00005.html