PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-7351 Google CVE debrief

CVE-2026-7351 is a race condition vulnerability in MHTML in Google Chrome prior to 147.0.7727.138. An attacker could exploit this vulnerability to leak cross-origin data via a crafted Chrome Extension. The vulnerability has a CVSS score of 3.1 and is considered Low severity. This vulnerability affects users who have installed extensions, particularly those from untrusted sources. Users of Google Chrome prior to version 147.0.7727.138 should update to the latest version to mitigate this vulnerability.

Vendor
Google
Product
Chrome
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-28
Original CVE updated
2026-07-24
Advisory published
2026-04-28
Advisory updated
2026-07-24

Who should care

Users of Google Chrome prior to version 147.0.7727.138 should update to the latest version to mitigate this vulnerability. Additionally, users who have installed extensions should be cautious of malicious extensions that could exploit this vulnerability. IT administrators should review and update Chrome versions in their organizations. Security teams should monitor for suspicious activity related to this vulnerability.

Technical summary

The vulnerability is a race condition in MHTML in Google Chrome prior to 147.0.7727.138. An attacker who convinces a user to install a malicious extension can exploit this vulnerability to leak cross-origin data via a crafted Chrome Extension. The vulnerability has a CVSS score of 3.1 and is considered Low severity. The attack requires user interaction to install the malicious extension. The vulnerability does not require any special conditions beyond convincing a user to install a malicious extension.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 147.0.7727.138 or later
  • Be cautious when installing extensions and only install from trusted sources
  • Monitor for suspicious activity and update extensions regularly
  • 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 2026-04-28T23:16:22.680Z and was last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. This vulnerability affects Google Chrome prior to version 147.0.7727.138. The vulnerability is a race condition in MHTML, which could allow an attacker to leak cross-origin data via a crafted Chrome Extension. The CVSS score is 3.1, and it is considered Low severity. Users should verify their Chrome version and be cautious with extensions.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-7351 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-7351

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

  • CVE-2026-7351 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-7351

    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.