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PatchSiren cyber security CVE debrief

CVE-2026-11291 Google CVE debrief

A vulnerability was discovered in Google Chrome on Android, specifically in the Android Autofill feature. This issue, tracked as CVE-2026-11291, allowed a remote attacker to bypass the same origin policy via a crafted HTML page. The vulnerability was rated as Low severity by Chromium and has a CVSS score of 4.3, which categorizes it as MEDIUM severity.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-07-23
Advisory published
2026-06-05
Advisory updated
2026-07-23

Who should care

Users of Google Chrome on Android, particularly those who may be exposed to crafted HTML pages from untrusted sources, should be aware of this vulnerability.

Technical summary

The vulnerability was caused by an inappropriate implementation in Android Autofill in Google Chrome on Android prior to version 149.0.7827.53. This allowed a remote attacker to bypass the same origin policy, potentially leading to unintended access or data exposure.

Defensive priority

The vulnerability has a CVSS score of 4.3 and is rated as MEDIUM severity. While it is not considered High severity, it still requires attention, especially for users who may be targeted by crafted HTML pages.

Recommended defensive actions

  • Update Google Chrome on Android to version 149.0.7827.53 or later to patch the vulnerability.
  • Be cautious when accessing HTML pages from untrusted sources, as they may be crafted to exploit this vulnerability.

Evidence notes

The CVE record and details were obtained from official sources, including CVE.org and the National Vulnerability Database (NVD).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11291 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11291

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11291 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11291

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.