CVE-2021-30533

Google Chrome

Published 7 Jun 2021 · updated 17 Jun 2026 · Analyzed

6.5 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 27 Jun 2022, with a remediation deadline of 18 Jul 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

Insufficient policy enforcement in PopupBlocker in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass navigation restrictions via a crafted iframe.

References

chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html · Release Notes, Vendor Advisory
crbug.com/1145553 · Exploit, Issue Tracking, Patch
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ · Mailing List, Release Notes
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ · Mailing List, Release Notes
security.gentoo.org/glsa/202107-06 · Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30533 · US Government Resource