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CVE-2026-91723 Google CVE debrief

CVE-2026-91723 debrief: Google Chrome WebAppInstalls race condition allows remote attackers to spoof UI elements via crafted HTML pages. This issue affects Chrome versions prior to 153.0.8010.47, with a CVSS score of 3.1 and classified as Low severity. Chrome users and administrators should assess exposure and apply updates to prevent potential UI spoofing attacks. The vulnerability is a Medium-severity race condition in WebAppInstalls, allowing remote attackers to spoof UI elements via crafted HTML pages.

Vendor
Google
Product
Chrome
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-15
Original CVE updated
2026-09-18
Advisory published
2026-09-15
Advisory updated
2026-09-18

Who should care

Chrome users and administrators should assess exposure and apply updates to prevent potential UI spoofing attacks. This includes reviewing Chrome version exposure, applying updates to version 153.0.8010.47 or later, and monitoring for suspicious UI activity in Chrome. IT teams and security professionals responsible for Chrome deployments should prioritize this update to mitigate the risk of UI spoofing attacks.

Why it matters

CVE-2026-91723 is a Medium-severity race condition in Google Chrome's WebAppInstalls that allows remote attackers to spoof UI elements. Chrome users and administrators should assess exposure, apply updates to version 153.0.8010.47 or later, and monitor for suspicious activity.

  • Assess Chrome version exposure to prevent UI spoofing
  • Apply updates to prevent potential attacks
  • Monitor for suspicious UI activity in Chrome

Technical summary

A race condition in WebAppInstalls in Google Chrome prior to 153.0.8010.47 allows remote attackers to spoof UI elements via crafted HTML pages. This issue has a CVSS score of 3.1 and is classified as Low severity. The vulnerability affects Chrome users and administrators who should assess exposure and apply updates to version 153.0.8010.47 or later to prevent potential UI spoofing attacks.

Defensive priority

Medium priority for Chrome users; assess exposure, apply updates

Recommended defensive actions

  • Assess exposure: Check if Chrome versions prior to 153.0.8010.47 are in use
  • Apply updates: Upgrade Chrome to version 153.0.8010.47 or later
  • Verify UI: Monitor for suspicious UI activity in Chrome

Evidence notes

Official CVE and NVD records detail a Medium-severity race condition in Google Chrome's WebAppInstalls prior to version 153.0.8010.47. The issue allows remote attackers to spoof UI elements via crafted HTML pages.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-91723 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-91723

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

  • CVE-2026-91723 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-91723

    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.