SEPTEMBER 23, 2026
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Case File

CVE-2026-8391

MEDIUM · CVSS 5.3 EPSS 0.30%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-12 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It affects Firefox, Java.

CVE
CVE-2026-8391
Severity
MEDIUM
CVSS
5.3
EPSS
0.30%
Firefox Java

Original NVD Description

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Related CVEs

Other vulnerabilities affecting the same vendor(s)