Mozilla Firefox vulnerabilities
3,702 known vulnerabilities affecting mozilla/firefox.
Total CVEs
3,702
CISA KEV
15
actively exploited
Public exploits
126
Exploited in wild
34
Severity breakdown
CRITICAL981HIGH1095MEDIUM1343LOW68UNKNOWN215
Vulnerabilities
Page 130 of 186
CVE-2026-84125P4MEDIUMCVSS 5.4fixed in 153.2.0≥ 154.0.0, < 155.0.02026-09-01
CVE-2026-84125 [MEDIUM] CWE-416 CVE-2026-84125: Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firef
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
nvdmozilla
CVE-2026-84118P4MEDIUMCVSS 5.4fixed in 153.2.0≥ 154.0.0, < 155.0.02026-09-01
CVE-2026-84118 [MEDIUM] CWE-416 CVE-2026-84118: Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 155, Firefox
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
nvdmozilla
CVE-2026-15719P4MEDIUMCVSS 5.4fixed in 152.0.62026-07-14
CVE-2026-15719 [MEDIUM] CVE-2026-15719: We are aware that exploit code for this is public however we are not aware of any attacks in the wil
We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.
nvdmozilla
CVE-2026-109732P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109732 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109732
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109732
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109729P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109729 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109729
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109729
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109738P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109738 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109738
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109738
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109752P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109752 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109752
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109752
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109706P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109706 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109706
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109706
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109727P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109727 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109727
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109727
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109710P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109710 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109710
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109710
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109728P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109728 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109728
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109728
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109726P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109726 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109726
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109726
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109718P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109718 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109718
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109718
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109761P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109761 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109761
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109761
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109735P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109735 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109735
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109735
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109748P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109748 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109748
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109748
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109749P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109749 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109749
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109749
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109717P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109717 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109717
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109717
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109724P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109724 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109724
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109724
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla
CVE-2026-109711P4MEDIUMCVSS 5.4fixed in Firefox 158
CVE-2026-109711 [MEDIUM] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109711
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109711
Product: Firefox
Impact: low
Fixed in: Firefox 158
mozilla