CVE-2026-0888

Information disclosure in the XML component. This vulnerability affects Firefox < 147 and Thunderbird < 147.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1985996
• https://www.mozilla.org/security/advisories/mfsa2026-01/
• https://www.mozilla.org/security/advisories/mfsa2026-04/