“A vulnerability in Mozilla Firefox could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.” states the security advisory.

“The vulnerability is due to insufficient sanitization of HTML fragments in chrome-privileged documents by the affected software. An attacker could exploit the vulnerability by persuading a user to access a link or file that submits malicious input to the affected software. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the user. If the user has elevated privileges, the attacker could compromise the system completely.“

Firefox 58 was released on January 23, it addresses more than 30 vulnerabilities in the popular browser, some of them rated as high severity, including a use-after-free, buffer overflow, and integer overflow flaws.

According to Mozilla, its bug bounty program has already paid out nearly $1 million to white hat hackers who reported vulnerabilities.