VDB

DEBIAN-CVE-2025-5266

DEBIAN-CVE-2025-5266 PUBLISHED CVSS 4.300000190734863 MEDIUM

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

Risk Scores

CVSS 3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected Products

VendorProductVersions
Debian:13firefox-esr0, 0
Debian:12firefox-esr102.15.0, 102.15.0, 102.15.0
Debian:13thunderbird0, 0
Debian:11firefox-esr128.6.0esr-1~deb11u2, 128.6.0esr-1~deb11u3, 128.6.0esr-3
Debian:11thunderbird91.12.0-1, 1:102.0.1-1, 1:102.0.2-1
Debian:14firefox-esr0, 0
Debian:14thunderbird0, 0
Debian:12thunderbird*, *, *

Exploit Intelligence

Timeline

  • May 27, 2025 CVE Published
  • Apr 28, 2026 CVE Updated
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