Description
Insufficient policy enforcement in reader mode in Google Chrome prior to 77.0.3865.75 allowed a remote attacker to bypass site isolation via a crafted HTML page.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Chrome | unspecified – < 77.0.3865.75 | 77.0.3865.75 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | chromium | 78.0.3904.87-1 | — |
| Debian 13 | chromium | 78.0.3904.87-1 | — |
| Debian 12 | chromium | 78.0.3904.87-1 | — |
| Debian 10 | chromium | 78.0.3904.97-1~deb10u1 | DSA-4562-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | chromium-browser | 77.0.3865.90-0ubuntu0.18.04.1 | — |
| Ubuntu 16.04 LTS | chromium-browser | 77.0.3865.90-0ubuntu0.16.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 77.0.3865.120-2.el6_10 | RHSA-2019:3211 |
Advisories 2
- RHSA-2019:3211 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-4562-1 chromium - security update Debian Security (DSA / DLA) · Mar 9, 2026