CVE-2021-30506 Cross-site scripting in Chrome

What is CVE-2021-30506?

CVE-2021-30506 is a high-severity cross-site scripting vulnerability in Fedoraproject Fedora, published on 4 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Incorrect security UI in Web App Installs in Google Chrome on Android prior to 90.0.4430.212 allowed an attacker who convinced a user to install a web application to inject scripts or HTML into a privileged page via a crafted HTML page.

Weakness: CWE-74

Which versions are affected by CVE-2021-30506?

It affects 2 products.

Products include Fedoraproject Fedora, Google Chrome.

How do I fix CVE-2021-30506?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-30506 being exploited?

There is no known exploitation of CVE-2021-30506 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-30506, GHSA-jmcw-mhj9-cqjg, UBUNTU-CVE-2021-30506.