Firefox
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Mozilla says AI-assisted Mythos found 271 Firefox vulnerabilities with few false positives
Mozilla said its Mythos AI-assisted security research found 271 Firefox vulnerabilities, including 180 rated sec-high. The company faced skepticism over false positives and the lack of individual CVEs.
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GhostPoster campaign hid JavaScript in Firefox extension icons to load backdoor
Researchers at Koi Security uncovered the GhostPoster campaign, which hides a JavaScript loader inside Firefox extension icon images to fetch an obfuscated payload that can hijack affiliate links, inject tracking, strip security headers and conduct ad and click fraud; Mozilla said it removed the affected extensions and updated detection systems.
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Firefox patch fixes high-severity WebAssembly bug that lingered for six months
AISLE disclosed a high-severity WebAssembly boundary error in Firefox (CVE-2025-13016) that allowed memory corruption and could enable arbitrary code execution; Mozilla released a patch in Firefox 145 and ESR 140.5 after rapid confirmation and remediation.
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Mozilla Addresses Critical Vulnerabilities in Firefox Browser
Mozilla has issued critical security updates for Firefox to address two vulnerabilities exploited at Pwn2Own Berlin, which could allow attackers to access sensitive data or execute unauthorized code.
