CVE-2026-11656

Name: CVE-2026-11656
Creator: NVD / NIST
Published: 2026-06-09T00:16:48.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.3/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2026-11656 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. Use after free in ServiceWorker in Google Chrome prior to 149.0.7827.103 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: High). EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

Use after free in ServiceWorker in Google Chrome prior to 149.0.7827.103 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: High)

Metrics

CVSS 3.1

8.3/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.17%

6.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Google	Chrome	< 149.0.7827.103

References

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.htmlRelease Notes, Vendor Advisory
https://issues.chromium.org/issues/513424000Permissions Required

Timeline

Published: Jun 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-11656?

How severe is CVE-2026-11656?

CVE-2026-11656 has a CVSS score of 8.3/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2026-11656?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-11656?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST