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PatchSiren cyber security CVE debrief

CVE-2026-5862 Google CVE debrief

CVE-2026-5862 is an inappropriate implementation vulnerability in V8 in Google Chrome prior to 147.0.7727.55. This vulnerability allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. The Chromium security severity is rated as High with a CVSS score of 8.8. The vulnerability affects users of Google Chrome versions prior to 147.0.7727.55. System administrators and users who rely on Google Chrome for browsing should be aware of this vulnerability and ensure their browsers are updated to the latest version.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

This vulnerability affects users of Google Chrome versions prior to 147.0.7727.55. System administrators and users who rely on Google Chrome for browsing should be aware of this vulnerability and ensure their browsers are updated to the latest version. Additionally, security teams and vulnerability management teams should prioritize patching and monitoring of affected systems.

Technical summary

The vulnerability is caused by an inappropriate implementation in the V8 engine of Google Chrome. This allows a remote attacker to execute arbitrary code within the sandbox environment of the browser by tricking the user into visiting a specially crafted HTML page. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating a high severity level. The vulnerability has a high impact on confidentiality, integrity, and availability.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 147.0.7727.55 or later
  • Ensure all users of Google Chrome within the organization are updated to the latest version
  • Monitor browser updates and patch management processes to ensure timely application of security patches
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-08T22:16:25.720Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. This information is based on the provided source corpus. Further verification by defenders is recommended to ensure accuracy and completeness of affected systems.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-5862 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-5862

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

  • CVE-2026-5862 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-5862

    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.