PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-11255 Google CVE debrief

CVE-2026-11255 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The vulnerability is caused by insufficient validation of untrusted input in the Storage Access API. This allows a remote attacker who has compromised the renderer process to leak cross-origin data via a crafted HTML page. The Chromium security severity of this vulnerability is rated as Low.

Vendor
Google
Product
Chrome
CVSS
HIGH 7.5
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 insufficient validation of untrusted input in the Storage Access API in Google Chrome prior to 149.0.7827.53. This allows a remote attacker who has compromised the renderer process to leak cross-origin data via a crafted HTML page.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE was published on 2026-06-05T00:17:02.100Z and modified on 2026-06-05T15:33:10.493Z. The vulnerability has a CVSS score of 7.5 and is rated as HIGH.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11255 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11255

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

  • CVE-2026-11255 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11255

    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.