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PatchSiren cyber security CVE debrief

CVE-2026-11157 Google CVE debrief

CVE-2026-11157 is a Medium severity vulnerability in Google Chrome prior to version 149.0.7827.53. The vulnerability is related to script injection in Accessibility and allows an attacker who has convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-07-23
Advisory published
2026-06-04
Advisory updated
2026-07-23

Who should care

Users of Google Chrome prior to version 149.0.7827.53, administrators of systems where Google Chrome is used, and security teams monitoring for potential UXSS vulnerabilities.

Technical summary

The vulnerability has a CVSS score of 5.4 and is classified as CWE-94. It requires user interaction (UI:R) and can result in low impact to confidentiality (C:L) and integrity (I:L). The attack vector is network-based (AV:N) with low attack complexity (AC:L) and no privileges required (PR:N).

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Be cautious when installing browser extensions, especially from untrusted sources.
  • Monitor for any suspicious activity or unusual behavior in Google Chrome.

Evidence notes

The CVE record and details are sourced from official databases and vendor advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11157 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11157

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

  • CVE-2026-11157 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11157

    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.