PatchSiren cyber security CVE debrief

CVE-2026-11280 Google CVE debrief

CVE-2026-11280 is a MEDIUM severity vulnerability in Google Chrome on iOS prior to 149.0.7827.53. This vulnerability, described as an inappropriate implementation in Signin, allows a remote attacker to perform UI spoofing via a crafted HTML page. The CVSS score for this vulnerability is 4.3.

Vendor: Google
Product: Chrome
CVSS: MEDIUM 4.3
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-05
Original CVE updated: 2026-06-05
Advisory published: 2026-06-05
Advisory updated: 2026-06-05

Who should care

Users of Google Chrome on iOS, particularly those who may be exposed to crafted HTML pages from remote attackers.

Technical summary

The vulnerability is caused by an inappropriate implementation in the Signin feature of Google Chrome on iOS. This allows a remote attacker to create a crafted HTML page that can spoof the user interface, potentially leading to confusion or further exploitation.

Defensive priority

MEDIUM

Recommended defensive actions

Update Google Chrome on iOS to version 149.0.7827.53 or later.
Be cautious when accessing HTML pages from untrusted sources.

Evidence notes

The CVE record and details were obtained from official sources, including the CVE.org and NVD.

Official resources

CVE-2026-11280 was published on 2026-06-05T00:17:05.270Z and modified on 2026-06-05T20:17:25.237Z.