CVE-2026-11656
8.3
HIGH
CVSS 3.1
EPSS 0.17%
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)
How to fix CVE-2026-11656
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/chromium—no fix listed
Is CVE-2026-11656 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |