Debian/firefox-esr: medium 4.3
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, Thun
Action: Upgrade firefox-esr to 128.11.0esr-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 128.11.0esr-1 | - |
Fixed versions
| 128.11.0esr-1 |
Sources
- osv: DEBIAN-CVE-2025-5266#Debian:14/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2025-5266
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