23 Top Open Source Penetration Testing Tools in 2026
Review and compare 23 of the best open-source pen testing tools in 2026.
The post 23 Top Open Source Penetration Testing Tools in 2026 appeared first on eSecurity Planet.
Firefox
Chrome and Firefox Updated to Patch Critical, High-Severity Vulnerabilities
The browser updates address multiple memory safety bugs that could potentially lead to remote code execution.
The post Chrome and Firefox Updated to Patch Critical, High-Severity Vulnerabilities appeared first on SecurityWeek.
423 Firefox Flaws Fixed as Browser Gains Support for Claude, Mythos, and More
Mozilla has successfully identified and patched 423 latent security vulnerabilities in Firefox using advanced artificial intelligence models, notably Claude Mythos Preview. Two weeks after initially announcing their AI-assisted security initiative, Fir…
What Mozilla learned running an AI security bug hunting pipeline on Firefox
Over the past several months, Mozilla ran an agentic harness powered by Claude Mythos Preview across Firefox’s source code, identifying 271 security bugs that were fixed in Firefox 150, with additional fixes shipped in versions 149.0.2 and 150.0….
Claude Mythos Has Found 271 Zero-Days in Firefox
That’s a lot. No, it’s an extraordinary number:
Since February, the Firefox team has been working around the clock using frontier AI models to find and fix latent security vulnerabilities in the browser. We wrote previously about our collaboration with Anthropic to scan Firefox with Opus 4.6, which led to fixes for 22 security-sensitive bugs in Firefox 148.
As part of our continued collaboration with Anthropic, we had the opportunity to apply an early version of Claude Mythos Preview to Firefox. This week’s release of Firefox 150 includes fixes for 271 vulnerabilities identified during this initial evaluation…
Chrome 147, Firefox 150 Security Updates Rolling Out
The browser refreshes resolve critical and high-severity vulnerabilities that could lead to arbitrary code execution.
The post Chrome 147, Firefox 150 Security Updates Rolling Out appeared first on SecurityWeek.
Firefox bug CVE-2026-6770 enabled cross-site tracking and Tor fingerprinting
CVE-2026-6770 let attackers fingerprint Firefox and Tor users, even in Private mode. Firefox 150 and Tor Browser 15.0.10 fixed it. A vulnerability, tracked as CVE-2026-6770, allowed attackers to fingerprint Firefox users, even in Private Browsing, and also impacted the Tor Browser. The flaw worked even when Tor’s New Identity feature was used, bypassing protections meant […]
Firefox Vulnerability Allows Tor User Fingerprinting
The vulnerability is tracked as CVE-2026-6770 and it has been patched with the release of Firefox 150 and Tor 15.0.10.
The post Firefox Vulnerability Allows Tor User Fingerprinting appeared first on SecurityWeek.
Claude Mythos Exposes 271 Zero-Day Security Flaws in Firefox
Mozilla has released Firefox 150, addressing a staggering 271 zero-day vulnerabilities. The security team identified these latent flaws using Anthropic’s early-stage Claude Mythos Preview AI model. This massive cleanup represents a major shift in…
Mozilla Firefox 150 Released With Fixes for Multiple Code Execution Vulnerabilities
Mozilla has released Firefox 150 to patch 41 security vulnerabilities, including multiple high-severity flaws that could lead to remote code execution. Users should immediately update their browsers to protect against these critical memory corruption a…