PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-11246 Google CVE debrief

CVE-2026-11246 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The issue is related to insufficient validation of untrusted input in IndexedDB, which could allow a remote attacker who had compromised the renderer process to bypass same origin policy via a crafted HTML page. The Chromium security severity of this vulnerability is rated as Low, and it has a CVSS score of 5.3, categorized as MEDIUM severity.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 5.3
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 prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability exists in the IndexedDB component of Google Chrome. It allows a remote attacker who has compromised the renderer process to bypass the same origin policy via a crafted HTML page. This is due to insufficient validation of untrusted input.

Defensive priority

The vulnerability has a CVSS score of 5.3 and is categorized as MEDIUM severity. However, since it requires the attacker to have already compromised the renderer process, the attack complexity is high.

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE record and details are sourced from official databases.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11246 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11246

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

  • CVE-2026-11246 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11246

    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.