CVE-2026-8947
⚠️ highSummary
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
CVSS Score
7.3
High
EPSS Score
0.4
Exploit Probability
Published Date
2026-05-19
First Seen: 2026-05-20
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 55.3% of all 338,295 vulnerabilities in our database.
#151,240
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 19, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Satoki Tsuji
SSVC data provided by
CISA
Last Modified
2026-07-15
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L