Affects widely used Google Chrome on Linux; sandbox escape could lead to code execution and business disruption.
CVE-2026-11659
Integer overflow in Chrome UI on Linux enables sandbox escape via crafted HTML.
Is CVE-2026-11659 being exploited?
Not confirmed. CVE-2026-11659 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. EPSS currently estimates a 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-11659?
CVE-2026-11659 is rated Critical with a CVSS score of 9.6. 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-2026-11659?
Yes. A fix has been recorded for CVE-2026-11659. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11659 affect?
CVE-2026-11659 affects Google Chrome on Linux < 149.0.7827.103. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11659?
Update Chrome on Linux to 149.0.7827.103 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote sandbox escape on Chrome (Linux) via crafted HTML page; may lead to arbitrary code execution.
Patch when possible
- affected< 149.0.7827.103
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.