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PatchSiren cyber security CVE debrief

CVE-2026-11243 Google CVE debrief

CVE-2026-11243 is a MEDIUM severity vulnerability in Google Chrome prior to 149.0.7827.53. This vulnerability, described as an inappropriate implementation in Downloads, allows a remote attacker to bypass navigation restrictions via a crafted HTML page. The CVSS score for this vulnerability is 5.4.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 5.4
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 prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by an inappropriate implementation in the Downloads feature of Google Chrome. This allows a remote attacker to bypass navigation restrictions by creating a crafted HTML page.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE was published on 2026-06-05T00:17:00.607Z and last modified on 2026-06-05T16:43:32.783Z. The vulnerability has a CVSS score of 5.4 and is classified as MEDIUM severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11243 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11243

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

  • CVE-2026-11243 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11243

    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.