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9.8 — CRITICAL

Mozilla hardens Firefox against fingerprinting, adds one-click session wipe

📅 19 May 2026 at 16:21 UTC📰 Cyber InsiderView original source ↗
Mozilla hardens Firefox against fingerprinting, adds one-click session wipe

Mozilla has released Firefox 151, introducing new privacy-focused protections for Private Browsing Mode and stronger anti-fingerprinting defenses. A new “End Private Session” feature for Firefox’s Private Browsing Mode, accessible through a fire-shaped icon next to the address bar, allows users to instantly wipe all data associated with the current private session without having to close … The post Mozilla hardens Firefox against fingerprinting, adds one-click session wipe appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Mozilla has released Firefox 151 with enhanced privacy features and security patches, addressing high-severity vulnerabilities that could be exploited for arbitrary code execution.

⚙️Technical Details
CVEs
CVE-2026-8945CVE-2026-8948CVE-2026-8947CVE-2026-8973CVE-2026-8975
Affected Systems
Firefox and Firefox Focus for AndroidmacOS users
Attack Vectors
NETWORK
💥Impact Assessment
Severity: CRITICAL
Who Is at Risk
Users of Firefox 151, particularly those using macOS
🛡️Recommended Actions
1Regularly update to the latest version of Firefox
2Use a reputable antivirus solution to detect and remove malware
3Implement strong password management practices
📦Affected Products
FirefoxFirefox Focus for Android
🔐NVD Verified DataVERIFIED
CVE-2026-8945 ↗CVSS 7.5 — HIGH
Attack Vector
NETWORK
Complexity
HIGH
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-693
CVE-2026-8948 ↗CVSS 9.1 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-942
CVE-2026-8947 ↗CVSS 7.3 — HIGH
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-416
CVE-2026-8973 ↗CVSS 9.8 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-119
CVE-2026-8975 ↗CVSS 9.8 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-119

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