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PatchSiren cyber security CVE debrief

CVE-2026-11143 Google CVE debrief

CVE-2026-11143 is an out of bounds read vulnerability in Extensions in Google Chrome on Linux prior to 149.0.7827.53. An attacker could exploit this by getting a user to install a malicious extension, potentially allowing access to sensitive information from process memory.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.5
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 on Linux, particularly those who install extensions from outside the official Chrome Web Store, should be cautious and ensure their browser is up to date.

Technical summary

The vulnerability, with a CVSS score of 6.5 (Medium severity), exists in the Extensions component of Google Chrome on Linux. An attacker could exploit this vulnerability by convincing a user to install a malicious extension, which could then access potentially sensitive information from process memory.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Be cautious when installing extensions, especially from outside the official Chrome Web Store.
  • Regularly review and update installed extensions.

Evidence notes

Evidence from the National Vulnerability Database (NVD) and Google's Chrome Releases blog indicate that this vulnerability was addressed in the stable channel update for desktop.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11143 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11143

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

  • CVE-2026-11143 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11143

    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.