The vulnerability in the XPCOM component of Mozilla Firefox, Firefox ESR, and the Thunderbird email client allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.
🗓️ 08 Apr 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 6 Views
| Reporter | Title | Published | Views | Family All 291 |
|---|---|---|---|---|
 | Mozilla -- Multiple vulnerabilities | 24 Mar 202600:00 | – | freebsd |
 | CVE-2026-4689 | 24 Mar 202612:30 | – | attackerkb |
 | Amazon Linux 2023 : firefox (ALAS2023-2026-1554) | 13 Apr 202600:00 | – | nessus |
| Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3241 (ALAS-2026-3241) | 14 Apr 202600:00 | – | nessus |
| Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2026-056 (ALASFIREFOX-2026-056) | 14 Apr 202600:00 | – | nessus |
| AlmaLinux 9 : firefox (ALSA-2026:5930) | 30 Mar 202600:00 | – | nessus |
| AlmaLinux 10 : firefox (ALSA-2026:5931) | 30 Mar 202600:00 | – | nessus |
| AlmaLinux 8 : firefox (ALSA-2026:5932) | 30 Mar 202600:00 | – | nessus |
| AlmaLinux 9 : thunderbird (ALSA-2026:6188) | 3 Apr 202600:00 | – | nessus |
| AlmaLinux 10 : thunderbird (ALSA-2026:6342) | 1 Apr 202600:00 | – | nessus |
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15 Jul 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 210
CVSS 310
EPSS0.00665