# CVE-2021-30533: A Google Chromium PopupBlocker bug is being used in attacks

Status: Being used now (CISA KEV, added 2022-06-27)
Who: 
Do this: 

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is Google Chromium PopupBlocker (CVE-2021-30533) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2021-30533. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official description
Google Chromium PopupBlocker contains an insufficient policy enforcement vulnerability that allows a remote attacker to bypass navigation restrictions via a crafted iframe. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

## Sources
- https://nvd.nist.gov/vuln/detail/CVE-2021-30533
- https://nvd.nist.gov/vuln/detail/CVE-2021-30533

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.