Remote code execution in a widely deployed browser (Google Chrome) poses broad risk to organizations and warrants org-wide attention.
CVE-2026-118346
Use-after-free in Chrome compositor enabling sandboxed remote code execution.
Is CVE-2026-118346 being exploited?
Not confirmed. CVE-2026-118346 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-118346?
CVE-2026-118346 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-118346?
Yes. A fix has been recorded for CVE-2026-118346. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-118346 affect?
CVE-2026-118346 affects Google Chrome (desktop) prior to 156.0.8078.73. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-118346?
Update Chrome to 156.0.8078.73 or later immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution inside Chrome sandbox via crafted HTML; attacker can run arbitrary code in the browser process.
Patch when possible
- affected< 156.0.8078.73
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.