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CVE-2026-79263 Google CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-25T21:18:20.887Z and has not been modified since then. CVE-2026-79263 is a race condition vulnerability in Google Chrome's Extensions prior to version 152.0.7977.65. This issue allows a remote attacker to execute arbitrary code inside the sandbox via crafted network traffic, with a Chromium security severity rating of Low and a CVSS score of 8.1, indicating a significant risk. Chrome users should prioritize updating to version 152.0.7977.65 or later to mitigate this vulnerability. The vulnerability affects Google Chrome users, particularly those with extensions installed. To address this issue, users should update to the latest version, review security policies for Chrome updates and extensions, and monitor browser and extension usage for suspicious activity.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-25
Original CVE updated
2026-08-31
Advisory published
2026-08-25
Advisory updated
2026-08-31

Who should care

Google Chrome users, particularly those with extensions installed, should be aware of this vulnerability and take steps to mitigate it. This includes updating to version 152.0.7977.65 or later, reviewing security policies for Chrome updates and extensions, and monitoring browser and extension usage for suspicious activity.

Technical summary

CVE-2026-79263 is a race condition vulnerability in Google Chrome's Extensions prior to version 152.0.7977.65. This issue allows a remote attacker to execute arbitrary code inside the sandbox via crafted network traffic. The Chromium security severity rating for this issue is Low, but the CVSS score is 8.1, indicating a significant risk.

Defensive priority

This CVE is rated HIGH with a CVSS score of 8.1, indicating a significant risk. Chrome users should prioritize updating to version 152.0.7977.65 or later to mitigate this vulnerability.

Recommended defensive actions

  • Update Google Chrome to version 152.0.7977.65 or later
  • Review and enforce security policies for Chrome updates and extensions
  • Monitor Chrome browser and extension usage for suspicious activity
  • Implement network traffic monitoring to detect crafted traffic
  • Verify and restrict access to sensitive data and systems

Evidence notes

The CVE-2026-79263 record indicates a race condition in Google Chrome's Extensions prior to version 152.0.7977.65. This issue allows a remote attacker to execute arbitrary code inside the sandbox via crafted network traffic, with a Chromium security severity rating of Low.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-79263 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-79263

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

  • CVE-2026-79263 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-79263

    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.