Universal cross-site scripting in Firefox for Android - CVE-2021-29953
Published: May 5, 2021
Vulnerability identifier: #VU52900
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-29953
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Firefox for Android
Firefox for Android
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary JavaScript in the context of another domain.
Successful exploitation of this vulnerability may allow a remote attacker to compromise the affected system.
How to mitigate CVE-2021-29953
Install updates from vendor's website.