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High · 7.5 CVE-2021-47784 EUVD-2026-2764GHSA-2mg9-fchf-m4w9

Cyberfox Web Browser 52.9.1 - Denial of Service (PoC)

Published Jan 15, 2026 · Updated Jan 15, 2026 · Assigned by VulnCheck

Description

Cyberfox Web Browser 52.9.1 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the search bar with excessive data. Attackers can generate a 9,000,000 byte payload and paste it into the search bar to trigger an application crash.

Affected products

VendorProductAffectedFixed
Cyberfox Cyberfox Web Browser 52.9.1 (Possibly all versions) —

References