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CVE-2026-5874 Google CVE debrief

CVE-2026-5874 is a use-after-free vulnerability in PrivateAI in Google Chrome prior to 147.0.7727.55. An attacker could potentially perform a sandbox escape via a crafted HTML page if a user is convinced to engage in specific UI gestures. This vulnerability has a CVSS score of 9.6, indicating a critical severity level. The vulnerability affects Google Chrome users who have not updated to the latest version. The CVE record and NVD detail page provide further information on the vulnerability.

Vendor
Google
Product
Chrome
CVSS
CRITICAL 9.6
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

Users of Google Chrome prior to version 147.0.7727.55 should update to the latest version to mitigate this vulnerability. This vulnerability has a CVSS score of 9.6, indicating a critical severity level. Security teams and administrators responsible for managing Google Chrome deployments should prioritize updating to the latest version.

Technical summary

The vulnerability exists in the PrivateAI component of Google Chrome prior to version 147.0.7727.55. A remote attacker could exploit this vulnerability by convincing a user to engage in specific UI gestures on a crafted HTML page, potentially leading to a sandbox escape. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H. The vulnerability can be mitigated by updating Google Chrome to version 147.0.7727.55 or later.

Defensive priority

High priority should be given to updating Google Chrome to version 147.0.7727.55 or later to mitigate this vulnerability. Security teams should also review compensating controls and monitor for suspicious activity.

Recommended defensive actions

  • Update Google Chrome to version 147.0.7727.55 or later
  • Ensure that users are aware of the risks associated with engaging in specific UI gestures on untrusted HTML pages
  • Monitor for any suspicious activity that could indicate exploitation of this vulnerability
  • 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 for CVE-2026-5874 was published on 2026-04-08T22:16:27.003Z and last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. However, the information available is limited, and defenders should verify the affected scope and severity with the official CVE record and NVD detail page. The vulnerability exists in Google Chrome prior to version 147.0.7727.55, and users should update to the latest version to mitigate this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-5874 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-5874

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

  • CVE-2026-5874 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-5874

    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.