CVE-2026-12027
9.6
CRITICAL
CVSS 3.1
Description
Inappropriate implementation in Headless in Google Chrome prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
How to fix CVE-2026-12027
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-2026-12027 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-12027.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| nvd | CVSS 3.1 | CRITICAL9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |