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Vulnerabilities

Vulnerability · CVE-2026-9116

Insufficient policy enforcement in ServiceWorker in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Published May 20, 2026 · catalog updated Jul 20, 2026 · Insufficient policy enforcement in

Check if you run it

No confirmed exploitation is on record for CVE-2026-9116. EPSS is 0.24%. Act only if a listed version of Insufficient policy enforcement in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Insufficient policy enforcement in).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.24%
Remediation
Advisory link
Affected products
cpe google/chrome

Insufficient policy enforcement in ServiceWorker in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe google/chromeversion unspecified

How to fix CVE-2026-9116

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-9116. EPSS is 0.24%. Act only if a listed version of Insufficient policy enforcement in is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-693: Protection Mechanism Failure. EPSS 0.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 20, 2026 · NIST NVD

    Detected

    Insufficient policy enforcement in ServiceWorker in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

  2. Jul 20, 2026 · NIST NVD

    Updated

    Insufficient policy enforcement in ServiceWorker in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Sources

  • CVE.orgVulnerability recordCVE-2026-9116

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-9116

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-9116

    Insufficient policy enforcement in ServiceWorker in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.